Ptosis mamaria y su resolución quirúrgica / Breast ptosis and surgical resolution

La ptosis mamaria es una anomalía de la mama relativamente frecuente, que se debe resolver con reconstrucción quirúrgica. Los objetivos de la reconstrucción quirúrgica de esta anomalía son dos: fundamentalmente corregir la posición inestética de la mama, y en segundo plano darle consorte al posible déficit funcional que pueda presentar En general, los déficits funcionales son tratados inmediatamente, mientras que la reparación cosmética puede dividirse en dos momentos vitales del paciente; el final de la pubertad en aquellos casos vinculados al crecimiento excesivo de la glándula y consecuente pérdida de posicionamiento adecuado del CAP para alcanzar la simetría máxima posible después de la maduración completa de la mama con la reducción pertinente de la glándula, o bien según la solicitud del paciente adulto que busca recuperar la imagen estética personal perdida con el curso de los años a partir de la atrofia glandular o elongación excesiva de los tejidos.

Mammary ptosis is a relatively frequent breast anomaly, which must be resolved with surgical reconstruction. The objectives of the surgical reconstruction of this anomaly are two: fundamentally correct the unstatic position of the breast, and in the background give consolation to the possible functional deficit that may present. In general, functional deficits are treated immediately, while cosmetic repair can be divided into two vital moments of the patient; the end of puberty in those cases related to the excessive growth of the gland and consequent loss of adequate positioning of the CAP to reach the maximum possible symmetry after the complete maturation of the breast with the relevant reduction of the gland, or according to the request of the adult patient who seek store cover the lost personal aesthetic image over the years from glandular atrophy or excessive tissue elongation

Pubertal breast development in primary school girls in Sokoto, North-western Nigeria

Background. There is wide variation in normal pubertal timing among various populations. Objectives. To determine the mean age of pubertal stages of breast development and menarche, and the influence of nutrition and ethnicity on pubertal onset in primary school girls in Sokoto, North-Western Nigeria.Methods. A cross-sectional study using a multistage random sampling design was conducted on 994 primary school girls in grades 3 - 6. Weight and height measurements and Tanner breast staging were done. Body mass index (BMI) was calculated, and a BMI-for-age percentile was used to categorise nutritional status. There were four major ethnic groups. P≤0.05 was taken as showing statistical significance. Results. The participants' mean age was 10.23 years (standard deviation (SD) 1.70, range 6 - 15 years). Of the 994 girls, 628 (63.2%) were pre-pubertal, and 366 (36.8%) were pubertal. Of the latter, 158 (15.9%) were in breast stage 2, while 112 (11.3%), 70 (7.0%) and 26 (2.6%) were in breast stages 3, 4 and 5, respectively. The mean ages (SD; range) of pubertal onset and menarche were 10.50 (1.33; 8 - 13), and 12.67 (1.65; 11 - 15), years, respectively. The overnourished (overweight/obese) and Igbo ethnic group girls had early-normal pubertal onset (p=0.006 and p=0.001, respectively). Conclusion. The mean ages of Tanner breast stages 1 - 5 and menarcheal age of girls in Sokoto, North-Western Nigeria, were within the age ranges reported worldwide. Pubertal onset was influenced by nutrition

Hiperplasia estromal pseudoangiomatosa: caso raro em menina de 11 anos / Pseudoangiomatous stromal hyperplasia: rare case in an 11-year-old girl

A Hiperplasia Estromal Pseudoangiomatosa (PASH) é uma doença benigna caracterizada pela proliferação excessiva de fibroblastos e miofibroblastos, podendo levar a um crescimento mamário importante. A apresentação é rara, em especial ocasionando necessidade de mastectomia em pacientes jovens. O estudo apresentou o relato de caso raro de uma paciente de 11 anos de idade, com hipertrofia mamária de rápida progressão, com necessidade de mastectomia e posteriormente mamoplastia de aumento para completa reinserção social.

Pseudoangiomatous stromal hyperplasia is a benign disease characterized by excessive proliferation of fibroblasts and myofibroblasts, which can lead to significant breast growth. The presentation is rare, especially among young women and cases requiring mastectomy. This report describes a rare case of an 11-year-old female patient with rapidly progressing mammary hypertrophy, who needed mastectomy and then mammoplasty for complete social integration.

Gigantomastia gestacional: como abordar essa situação clínica / Gestational gigantomastia: how to address this clinical situation

A gigantomastia gestacional é uma desordem rara, na qual ocorre o crescimento excessivo e rápido das mamas, culminando com edema e congestão venosa das mesmas, além de ocasionar dor, ulceração da pele e infecção local. Estas complicações, em alguns casos, levam à necessidade de mastectomia de emergência ou abortamento induzido. A hipótese etiológica mais aceita é a de que exista uma estimulação anormal do tecido mamário, que pode ser desencadeada por níveis excessivos de hormônios ou por uma hipersensibilidade deste tecido a níveis hormonais normais. Apesar de a mama regredir após a gestação, raramente volta ao estado original; portanto, a redução da mama através de mastectomia ou mamoplastia geralmente é necessária. Além disso, é grande o risco de recorrências em gestações futuras. Os autores relatam o caso de gigantomastia em uma primigesta, com necessidade de interrupção da gravidez, devido ao risco de morte materna, e posterior intervenção cirúrgica com mamoplastia redutora.

Gestational gigantomastia is a rare disorder characterized by an excessive and rapid enlargement of the breasts, resulting in edema and venous congestion of breast tissue. It is a painful condition that causes skin ulceration and local infection. In some cases, these complications lead to an emergency mastectomy or induced abortion. The most probable etiology is an abnormal stimulation of breast tissue that is probably triggered by an abnormally elevated level of hormones or by the hypersensitivity of breast tissue to normal hormone levels. Although the breast volume decreases after pregnancy, it rarely returns to its original state; therefore, breast reduction through mastectomy or mammaplasty is usually necessary. Moreover, there is a high likelihood of recurrence in subsequent pregnancies. The authors report a case of gigantomastia in a primigravida that required pregnancy termination, because of the risk of maternal death, and a subsequent breast reduction surgery.

Relationship between chronological and bone ages and pubertal stage of breasts with bone biomarkers and bone mineral density in adolescents / Relação entre as idades cronológica e óssea e o estágio puberal das mamas com os biomarcadores ósseos e a densidade mineral óssea em adolescentes

OBJECTIVE: To study bone mineral density (BMD) in adolescent females according to five groups of chronological age (CA), bone age (BA), and breast development stage (B), and to correlate these parameters with plasma bone biomarkers (BB). METHODS: This was a cross-sectional study performed in 101 healthy adolescent females between 10 and 20 years old. The study variables were: weight, height, body mass index (BMI), CA, B, BA, calcium intake, BMD, and BB. Osteocalcin (OC), bone alkaline phosphatase (BAP), and C-terminal telopeptide (S-CTx) were evaluated for BB. BMD was measured using dual energy X-ray absorptiometry (DXA). RESULTS: BMD in lumbar spine, proximal femur, and total body increased with age, and the respective observed averages were: in CA1 (10 years old), 0.631, 0.692, 0.798 g/cm2; in CA2 (11 to 12 years old), 0.698, 0.763, 0.840 g/cm2; in CA3 (13 to 14 years old), 0.865, 0.889, 0.972 g/cm2; in CA4 (15 to 16 years old), 0.902, 0.922, 1.013 g/cm2; and in CA5 (17 to 19 years old), 0.944, 0.929, 1.35 g/cm2. These results showed significant differences between 13 and 14 years of age (CA3) or when girls reached the B3 stage (0.709, 0.832, 0.867 g/cm2). The highest median concentrations of BB were between 10 and 12 years of age when adolescents were in the B2-B3 (p < 0.001). Median BB concentrations decreased in advanced BA and B. CONCLUSIONS: BB concentrations were positively correlated with the peak height velocity and negatively correlated with BMD in the study sites. Increased BMD and BB concentrations were observed in B3. .

OBJETIVO: Avaliar a densidade mineral óssea (DMO) em adolescentes do sexo feminino de acordo com a idade cronológica (IC), idade óssea (IO) e desenvolvimento das mamas (M) e suas correlações com biomarcadores de remodelação óssea em plasma (BO). MÉTODOS: Este foi um estudo transversal prospectivo feito em 101 adolescentes saudáveis do sexo feminino com idade entre 10 e 20 anos. As variáveis estudadas foram: peso, altura, índice de massa corpórea (IMC), IC, IO, M, ingestão de cálcio, DMO e BO. A osteocalcina (OC), fosfatase alcalina óssea (BAP) e o telopeptídeo C terminal (S-CTx) foram os biomarcadores de remodelação óssea avaliados. A DMO foi obtida por absorciometria de raios-X de dupla energia (DXA). RESULTADOS: A DMO de coluna lombar, fêmur proximal e corpo total aumentou com a idade, e as respectivas médias observadas foram: IC1 = 0,631, 0.692, 0,798 g/cm2; IC2, 0,698, 0,763, 0,840 g/cm2; IC3, 0,865, 0,889, 0,972 g/cm2; IC4, 0,902, 0,922, 1,013 g/cm2; e IC5, 0,944, 0,929, 1,35 g/cm2. Observou-se diferença significativa entre 13 e 14 anos (IC3) ou quando as meninas estavam em M3 (0,709, 0,832, 0,867 g/cm2). Os valores dos BO apresentaram elevação entre 10 e 12 anos e quando as adolescentes estavam em M2-M3 (p < 0,001). Os valores das medianas dos BO diminuíram com o avançar da IO e M. CONCLUSÕES: Os BOs mostraram paralelismo com o pico de velocidade de crescimento e demonstraram correlação negativa com a DMO no sítios avaliados. O aumento da DMO e dos BOs foi observado em M3. .

Vulvovaginitis en una población pediátrica: relación entre el agente etiológico, la edad y el estadio de Tanner mamario / Vulvovaginitis in a pediatric population: relationship among etiologic agents, age and Tanner staging of breast development

Introducción. La vulvovaginitis representa el 25% de las consultas en ginecología pediátrica. Objetivo. Evaluar las etiologías de las vulvovaginitis en función de la edad y el estadio de Tanner mamario. Material y métodos. Estudio descriptivo y transversal realizado entre el 1 de enero y el 31 de diciembre de 2011. Se analizaron pacientes con vulvovaginitis en función de dos variables: la edad (GI: 0 a 8,9 años; GII: 9 a 15,9 años y GIII: 16 a 18 años) y el estadio de Tanner mamario (I; II-III; IV-V). Resultados. Se incluyeron 229 pacientes; 78 niñas en GI, 134 en GII y 17 en GIII; en relación con el estadio de Tanner mamario, se agruparon 81 niñas en TI, 36 en TII-III y 112 TIV-V. Shigella y Oxiurus se presentaron con mayor frecuencia a temprana edad. Candida albicans, otras especies de Candida, Gardnerella y Ureaplasma urealyticum se observaron en niñas mayores. Oxiurus predominó en la etapa prepuberal y Candida albicans, en la pospuberal. Conclusiones. En relación con la etiología de las vulvovaginitis, la influencia hormonal es más relevante que la edad cronológica de la paciente.

Introduction. Vulvovaginitis accounts for 25% of all pediatric gynecology consultations. Objective. To assess the etiology of vulvovaginitis based on age and Tanner staging of breast development. Material and Methods. Descriptive, cross-sectional study conducted between January 1st and December 31st, 2011. Patients with vulvovaginitis were assessed based on two outcome measures: age group (GI: 0 to 8.9 years old, GII: 9 to 15.9 years old, and GIII: 16 to 18 years old), and the Tanner staging of breast development (I, II-III, IV-V). Results. Two hundred and twenty-nine patients were included, 78 girls in the GI group, 134 in the GII group, and 17 in the GIII group; 81 girls were classified as TI, 36 as TII-III, and 112 as TIV-V based on Tanner staging. Shigella and Oxyuris were the most commonly found etiologic agents in younger girls. Candida albicans, other Candida species, Gardnerella and Ureaplasma urealyticum were the germs most commonly observed in older patients. Oxyuris was predominant in prepubertal girls, while Candida albicans, in postpubertal girls. Conclusions. Hormonal influence was more relevant than the patient's age in terms of vulvovaginitis etiology.

Aumento mamário por meio da incisão da abdominoplastia: estudo prospectivo de 100 casos / Breast augmentation via the abdominoplasty incision approach: a prospective study of 100 cases

INTRODUÇÃO: A gravidez e a obesidade causam distensão da parede abdominal e também produzem mudanças na forma e no tamanho das mamas. Assim, não é incomum a necessidade de melhoria estética da área abdominal, coincidindo com o desejo de aumento de mama. A mamoplastia utilizando a mesma incisão da abdominoplastia foi descrita pela primeira vez em 1976. Em decorrência da falta de estudos prospectivos empregando essa abordagem, os autores realizaram uma série de dermolipectomias usando a incisão abdominal para inserir o par de implantes mamários de silicone gel. MÉTODO: Cem pacientes consecutivas foram selecionadas, com média de idade de 33 ± 2 anos. A abdominoplastia clássica foi realizada e, em seguida, confeccionados 2 túneis sobre os hipocôndrios direito e esquerdo. Após colocação dos implantes, foi realizada reconstrução do sulco mamário com pontos simples usando fios absorvíveis, fixando o subcutâneo à aponeurose. RESULTADOS: Não houve nenhuma das seguintes complicações: trombose venosa profunda, complicações cardiorrespiratórias ou anestésicas, necrose de pele, sangramento visível, e hematoma ou infecção detectáveis clinicamente. O volume dos implantes variou de 280 ml a 450 ml (mediana de 350 ml). O tempo médio de operação foi de 116 minutos. Em nenhum caso foi necessária reoperação. O período de acompanhamento mínimo foi de 9 meses e máximo, de 84 meses (média de 36 meses). CONCLUSÕES: A técnica de aumento mamário por meio da incisão da abdominoplastia se mostrou confiável e simples, constituindo uma nova opção para a cirurgia mamária sem cicatriz nas mamas.

INTRODUCTION: Pregnancy and obesity cause distension of the abdominal wall and produce changes in the shape and size of the breasts. Thus, the need of aesthetic improvement of the abdominal area is not uncommon, coinciding with the desire for breast augmentation. Performing mammoplasty via the abdominoplasty incision approach was first described in 1976. Because of the lack of prospective studies using this approach, we performed a series of dermolipectomy procedures using the abdominal incision to insert a pair of silicone gel breast implants. METHODS: In total, 100 consecutive patients were selected, with a mean age of 33 ± 2 years. Classic abdominoplasty was performed, and 2 tunnels were then made in the right and left hypochondria. After implant placement, the mammary fold was reconstructed using simple sutures with absorbable threads to attach the subcutaneous tissue to the aponeurosis. RESULTS: None of the following complications were observed: deep-vein thrombosis, cardiorespiratory or anesthetic complications, skin necrosis, visible bleeding, hematoma, or clinically detectable infection. The volume of the implants ranged from 280 to 450 mL (median, 350 mL). The mean operation time was 116 minutes. Reoperation was not necessary in any of the cases. The monitoring period ranged from 9 to 84 months (mean, 36 months). CONCLUSIONS: Breast augmentation via the abdominoplasty incision approach was demonstrated to be a reliable and simple technique, providing a new, scar-free alternative to mammary surgical procedures.

Retalho toracodorsal desepitelizado: um novo conceito para a reconstrução autóloga da mama / Deepithelialized thoracodorsal flap: a new concept for autologous breast reconstruction

INTRODUÇÃO: A associação de retalho muscular toracodorsal com uma extensão fasciocutânea resulta em um amplo retalho, que permite recobrir o defeito cutâneo residual da mastectomia. O objetivo deste estudo é compartilhar 11 anos de experiência com um novo conceito em reconstrução autóloga da mama, utilizando um retalho cutâneo toracodorsal desepitelizado pediculado com músculo grande dorsal como vetor. MÉTODO: Foi realizado um estudo retrospectivo com 247 pacientes operadas de 1999 a 2009. Os parâmetros de interesse incluíram idade, índice de massa corporal, história de tabagismo, radioterapia e quimioterapia, tamanho da mama, dimensões do retalho, tempo cirúrgico, expansão do tecido mamário e índice de complicações. O desenho do retalho toracodorsal em formato de elipse se estende da região da linha dorsal média até a linha inframamária média, com largura máxima na linha axilar média. A extensão fasciocutânea desepitelizada é colocada dissecada juntamente com o músculo grande dorsal como seu veículo e pedículo responsável pelo suprimento sanguíneo, que são levados em monobloco até a área de pele da nova neomama previamente dissecada. O formato e a projeção da mama são restaurados gradualmente como uma expansão de tecido. RESULTADOS: Reconstruções imediata e tardia da mama foram realizadas em 14,5% e 85,5% das pacientes, respectivamente. A reconstrução bilateral da mama foi realizada em 8,9% das pacientes. Nenhuma das pacientes submetidas a radioterapia mamária (76,7%) recebeu implantes para reconstrução. O tempo cirúrgico médio foi de 2 horas e 20 minutos. A expansão da pele mamária não irradiada foi realizada em um período de 3 meses, enquanto a expansão da pele irradiada levou um período médio de 5 meses após a reconstrução tardia. A taxa de complicações foi de 11,3%. Não houve perda total do retalho. A taxa de seroma foi de 7% após a remoção dos drenos. O tempo de hospitalização médio foi de 3 dias. Foi realizado remodelamento da mama contralateral em 92% dos casos e enxerto de gordura em 14% das pacientes. Em um período médio de acompanhamento de 4 anos, a taxa de satisfação das pacientes foi elevada. CONCLUSÕES: O retalho toracodorsal é uma opção cirúrgica segura e confiável para a reconstrução autóloga da mama. As principais vantagens são a obtenção de grandes volumes de mama contornando o uso de material protético, evitando-se a aparência de retalho na mama reconstruída, obtendo-se expansão tecidual e, ao mesmo tempo, garantindo morbidade aceitável no sítio doador.

BACKGROUND: The association the thoracodorsal muscular flap with a thoracic fascio-cutaneous extension results in a large flap, that allowed to cover the mastectomy residual skin defect. The purpose of this study is to share 11 year experience with a new concept in autologous breast reconstruction using a deepithelialized thoracodorsal skin flap pedicle with the latissimus dorsi muscle as vector. METHODS: A retrospective study of 247 operated patients from 1999 to 2009 was performed. Parameters of interest included age, body mass index, smoking, radiation and chemotherapy histories, breast size, flap dimensions, operative time, breast tissue expansion and complication rates. The thoracodorsal flap design under an ellipse shape extends from near the mid dorsal line extended up to the mid-infra-mammary line with maximal width at the mid axillary line. The deepithelialized fascio-cutaneous extension is lumped together with the latissimus dorsi as its vehicle and blood supply pedicle, together are brought to the neo-mammary previous dissected skin area. Gradual as a tissue expansion the breast shape and projection are restored. RESULTS: Immediate and delayed breast reconstructions were done in 14.5% and 85.5%, respectively. Bilateral breast reconstruction was done in 9% of the patients. Implants were not used for reconstruction purposes in any of the 77% of the patients received breast radiotherapy. The average operative time was 2 hours and 20 minutes. Expansion of non irradiated breast skin occurred over a three months period, whereas that of irradiated skin took an average of five months following delayed reconstruction. The complication rate was 11.4%. No total flap loss was reported. The seroma rate was 7% after the drains had been removed. The mean hospital stay was 3 days. Contra lateral breast remodeling was performed in 92% of the cases and fat grafting in 14% of the cases. With an average follow-up of 4 years, patient satisfaction was rated high by the patients. CONCLUSIONS: The thoracodorsal flap is a safe and reliable surgical option for autologous breast reconstruction. Its main advantages achieving large breast volumes circumventing the use of prosthetic material, avoiding the patch look on the reconstructive breast, achieving tissue expansion, while insuring acceptable donor site morbidity.

Mastoplastia de aumento através da abdominoplastia / Breast augmentation through abdominoplasty

INTRODUÇÃO: Este trabalho demonstra a técnica de dissecção de espaço retroglandular através da abdominoplastia, com visualização de fibra óptica para inclusão de implantes mamários de silicone gel. MÉTODO: Foram avaliadas, retrospectivamente, 44 pacientes portadoras de flacidez abdominal e hipomastia, submetidas a mastoplastia de aumento através da abdominoplastia em um só estágio, durante o período de setembro de 2001 a abril de 2012. RESULTADOS: A técnica utilizada possibilitou melhora do contorno abdominal e aumento do volume mamário pela mesma incisão. As complicações ocorreram na área abdominal (hematoma, seroma, deiscência e cicatriz hipertrófica) e na região mamária (contratura capsular e infecção). CONCLUSÕES: A técnica de mastoplastia de aumento por via abdominal evita cicatrizes nas mamas ou axilas, é segura, reprodutível, com curva de aprendizado curta, e resultados satisfatórios e duradouros.

BACKGROUND: This study establishes a technique for dissection of the retroglandular space through abdominoplasty by using a lighted retractor for the introduction of silicone gel breast implants. METHODS: A retrospective study was carried out for 44 patients with abdominal flaccidity and hypomastia who underwent breast augmentation through a single-stage abdominoplasty between September 2001 and April 2012. RESULTS: This method enabled improvement of the abdominal contour and breast augmentation through the same incision. The complications observed affected the abdominal area (hematoma, seroma, dehiscence, and hypertrophic scarring) and the breast (capsular contracture and infection). CONCLUSIONS: Breast augmentation through abdominoplasty does not cause scars on the breast or armpit and is a safe and reproducible procedure with a short learning curve. Moreover, it provides satisfactory and long-lasting results.

La autoevaluación es un método poco confiable para establecer el desarrollo puberal en escolares / Self evaluation is not reliable for assessing puberal development in school-aged children

Introduction: Puberal development assessment (PDA) is performed according Tanner's method (TM). Objective: In order establish the coincidence between PDA determined by physicians and the self-evaluation by school-aged children. Material and Methods: 2 980 school children from Santiago, Chile, were assessed by means of TM, the development of the mammary gland (MD), male genitalia (MG) and pubic hair (PH) were assessed. PDA was simultaneously performed by physicians and by the school children. Results: Concordance between physicians and self assessment showed a kappa coefficient (KC) of 0.55, 0.45, and 0.51 in PH, MD and MG respectively, (acceptable KC > 0.61). Self-evaluation of PDA decreased as the age of children increased, with OR of 0.76 (95 percent IC 0.74 -0.79); 0.87 (95 percent IC 0.83 - 0.91) and 0.92 (95 percent IC 0.88 - 0.96) for PH, MD and MG respectively. An inverse relationship between nutritional status (NS) and PDA was observed only in PH, obese school children underscored their PH (OR 0.6; 95 percent IC 0.5 - 0.7). Multivariate analysis for gender and NS showed that only females overestimate their PH, OR of 1.15 (95 percent IC 1-1.32). Conclusions: PDA through self-assessment yields only moderate correlation coefficients, thus it is not reliable for making relevant clinical decisions.

Introducción: La determinación del desarrollo puberal (DDP) se evalúa según el método de Tanner (MT). Objetivo: Determinar la concordancia de la DDP entre médicos con la autoevaluación en escolares. Pacientes y Métodos: Se examinaron 2 980 escolares de Santiago de Chile. Se evalúo desarrollo mamario (DM), genitales masculinos (GM) y vello púbico (VP) mediante el MT. La DDP fue evaluada simultáneamente por un médico y por los escolares. Resultados: La concordancia entre médicos y la autoevaluación mostró un coeficiente kappa (CK) de 0,55, 0,45, 0,51 en VP, DM y GM respectivamente, (CK aceptable > 0,61). La autoevaluación del DDP disminuyo a medida que aumentaba la edad, con OR respectivos de 0,76 (95 por ciento IC 0,74-0,79); 0,87 (95 por ciento IC 0,83-0,91) y 0,92 (95 por ciento IC 0,88 -0,96) para VP, DM y GM. Se observo una relación inversa entre estado nutricional (EN) y DDP sólo en VP, escolares obesos subestimaban su VP (OR 0,6; 95 por ciento IC 0,5-0,7). El análisis multivariado de género y EN mostró que sólo las mujeres sobreestimaban su VP, OR de 1,15 (95 por ciento IC 1-1,32). Conclusiones: La DDP mediante autoevaluación obtiene coeficientes de correlación sólo moderados que no permiten confiar en este para establecer decisiones clínicas relevantes.

Factors to Predict Positive Results of Gonadotropin Releasing Hormone Stimulation Test in Girls with Suspected Precocious Puberty

Sometimes, the clinical findings and the results of the gonadotropin-releasing hormone (GnRH) stimulation test are inconsistent in girls with early breast development and bone age advancement. We aimed to investigate the factors predicting positive results of the GnRH stimulation test in girls with suspected central precocious puberty (CPP). We reviewed the records of 574 girls who developed breast budding before the age of 8 yr and underwent the GnRH stimulation test under the age of 9 yr. Positive results of the GnRH stimulated peak luteinizing hormone (LH) level were defined as 5 IU/L and over. Girls with the initial positive results (n = 375) showed accelerated growth, advanced bone age and higher serum basal LH, follicle-stimulating hormone, and estradiol levels, compared to those with the initial negative results (n = 199). Girls with the follow-up positive results (n = 64) showed accelerated growth and advanced bone age, compared to those with the follow-up negative results. In the binary logistic regression, the growth velocity ratio was the most significant predictive factor of positive results. We suggest that the rapid growth velocity is the most useful predictive factor for positive results in the GnRH stimulation test in girls with suspected precocious puberty.

Adipocyte morphometric evaluation and angiogenesis in the omentum transposed to the breast: a preliminary study

OBJECTIVE: The purpose of this study was to describe the probable mechanism of the volume increase of laparoscopically harvested omentum flaps used to treat breast deformities. METHODS: A histological analysis of omentum samples was performed to study the volume increase of laparoscopically harvested omentum flaps. Samples were harvested immediately after the transposition of the omentum from the abdominal cavity to the breast region and during the second surgical procedure for breast symmetrization of eight patients submitted to the transposition of the omentum flap. Changes in the morphometric measurements of the adipocytes (perimeter, diameter, and area), microvascular density (as measured by the CD31 endothelial marker), and immunohistochemical expression of VEGF were documented. RESULTS: The increases in adipocyte size and microvascular density were statistically significant (P < 0.012). The expression levels of VEGF were lower in the second set of samples when compared to the first set, but the differences were not statistically significant (P < 0.093). CONCLUSION: These results demonstrate an increase in cellular volume as measured by adipocyte perimeter, diameter, and area. Moreover, the increase in the number of vessels in the second set of samples suggests that neoangiogenesis was stimulated by the initial increase in VEGF expression levels observed in the first set of samples. The increase in VEGF expression in the flap may have been caused by adipocyte hypertrophy resulting from neoangiogenesis.

Telarquia y estado nutricional: Estudio epidemiológico en dos grupos étnicos / Thelarche and nutritional status: An epidemiológical study of two ethnic groups

Background: Improvements in environmental conditions may result in an earlier onset of thelarche. However, its onset is not homogeneous among different population groups. Aim: To assess the relationship between nutritional status, ethnicity and age of thelarche. Material and methods: Cross-sectional study of girls in second through sixth grade, attending 165 schools located in Chile's Araucania region. Of these, 231 girls who presented thelarche (breast button) were selected. The girls' surnames were used to identify their ethncity: indigenous had three or four last names of Mapuche indigenous origin (n =113), while non-indigenous were those who only had Chilean-Spanish last names (n =118). Weight, height, waist circumference and skinfold thicknesses were measured and socio-economic background information was collected through a home interview. Results: The median age of thelarche was 10 years and 4 months, regardless of ethnic group. Multivariant models showed that an increase of one z score unit of body mass index (BMI) decreased the median age of thelarche by 5.6 months (CI: -7.24 to -3.90), controlling for the effect of different covariables. A decrease in one z score of height retards the median age of thelarche by 5.5 months (CI: 4.02 to 6.98). Ethnicity did not influence the age of thelarche. Conclusions: The age of thelarche found by us is similar to that reported in international studies, it comes earlier as weight increases, is delayed as height decreases and is not related to ethnicity.

Estado nutricional en la telarquia y menarquia de adolescentes chilenas indígenas y no indígenas / Nutritional status in telarche and menarche in indigenous and non indigenous chilean adolescents

Se ha señalado que existiría un efecto compensatorio de la desnutrición crónica que induce al exceso de peso y esto seria más evidente en poblaciones indígenas. El objetivo de este trabajo fue establecer la asociación entre etnia indígena (mapuche) y composición corporal en telarquia y menarquia de indígenas y no indígenas. Mediante un diseño transversal, que se inició con un tamizaje de 10.192 niñas de 168 escuelas de la región de la Araucanía en Chile, para identificar 230 adolescentes en telarquia (estadio II de desarrollo de la glandula mamaria): 112 indígenas y 118 no indígenas y 239 en menarquia: 113 indígenas y 126 no indígenas, a quienes se evaluó el índice de masa corporal (IMC), circunferencia de cintura (CC), masa magra (MM) y grasa (MG). El IMC, CC y MM fueron mayores en indígenas en telarquia (p<0,001). En menarquia las diferencias disminuyeron alcanzando valores mayores en indígenas sólo en IMC y MG (p=0,04 y 0,02). Mediante regresión lineal, se observó que pertenecer a la etnia mapuche aumentó el IMC en 0,37 puntajes z, 95 por ciento intervalo de confianza (IC): 0,17-0,58 en telarquia y en 0,44 puntajes z (IC: 0,18-0,70) en menarquia. El ser mapuche se asoció a tener mayor CC, 3,33 cm (IC: 1,67-4,99) en telarquia y 3,17, (IC: 0,73 -5,60) en menarquia, esta procedencia se asocia también a mayor porcentaje de masa magra en telarquia, 1,3 (IC: 0,11-2,43) y mayor masa grasa en menarquia: 2,4 (IC: 1,02- 3,77). Los indicadores de composición corporal en adolescentes indígenas son preocupantes y sugieren que existan programas de fomento de estilos de vida saludable, aprovechando recursos existentes.

A compensatory effect of chronic malnutrition that influences excess of weight has been reported. This effect would be more evident in indigenous populations. The aim of this study was to find out the association between ethnic group (mapuche) and body composition in the telarche and menarche of indigenous and non indigenous adolescents. This was a cross sectional design. At the beginning, a screening of 10,121 girls from 168 schools in the Araucania Region, Chile was done. 230 adolescent in telarche (grade II of the development of the mammary gland) :112 indigenous and 118 non indigenous and 239 in menarche (113 indigenous and 126 non indigenous) were identified. Body mass index (BMI), waist circumference (WC), lean mass (LM) and fat mass (FM) were evaluated. BMI, WC and LM were higher in the indigenous adolescent in telarche. For those with menarche, the differences decreased, reaching with higher values for indigenous girls only in BMI and FM (p=0,04 and 0,02, respectively). Belonging to the indigenous group increased the BMI in 0.37 z scores in telarche (95 percent CI: 0,17-0,58) and 0,44 in menarche (95 percent CI:0,18-0,70). Being mapuche was also associated to higher WC: 3.33 cm (CI 1,67 - 4,99) in telarche and 3,17 cm (CI 0,73-5,60) in menarche and to higher lean mass only for those adolescents with telarche (1,3 CI: 0,11-2,43) and to fat mass only for those with menarche (2,4 CI: 1,02-3,77). The body composition indicators in indigenous adolescents are of concern and underscores the importance of programs to promote healthy lifestyles that take into account resources from the indigenous communities.

Diagnóstico diferencial da telarca precoce: ainda um desafio / Differential diagnosis of premature thelarche: still a challenge

Objetivo: identificar as caracteristicas de meninas com telarca precoce isolada (TP) que teriam utilidade no diagnóstico diferencial com puberdade precoce central (PPC). Métodos: foram estudadas 45 meninas entre 12 meses e seis anos de idade com relato de crescimento de mamas isoladamente, sem qualquer outro sinal de puberdade, atendidas na Divisão de Endocrinologia Pediátrica do Hospital das Clínicas da Universidade Federal de Minas Gerais. Resultados: o início da telarca ocorreu antes de 24 meses de idade em 97,8 por cento delas. Não houve progresso para o quadro de puberdade durante acompanhamento me diano de 13 meses. O bservou-se variação clínico-laboratorial, tendo ocorrido aceleração transitória da velocidade de crescimento ou avanço da idade óssea em 15 por cento das meni nas, além de alterações ultra-sonográficas. Esses achados caracterizam um quadro intermediário entre TP e PPC nesse percentual. Obser vou-se, ainda, que 33 por cento das que tinham até anos de idade apresentaram níveis puberais de LH após estímulo, mas níveis de FSH muito mais elevados e não evoluíram clinicamente para puberdade. Elevação acentuada e predominante de FSH foi observada em 100 por cento da amostra após estímulo com GnRH , o que praticamente define o diagnósticode TP. Conclusões: o quadro laboratorial na TP apresenta variações, o que reforça a importância do acompanhamento clínico no diagnóstico diferencial com PPC . O teste com GnRH deve ser interpretado com cautela em idades até quatro anos. Elevaçãoo acentuada e predominante de FSH praticamente define o diagnóstico de TP.

Tall stature and poor breast development after estrogen replacement in a hypergonadotrophic hypogonadic patient with a 45,X/46,X,der(X) karyotype with SHOX gene overdosage / Estatura alta e hipodesenvolvimento mamário após reposição estrogênica em paciente com hipogonadismo hipergonadotrófico e cariótipo 45,X/46,X, der(X) com superdosagem do gene SHOX

SHOX is exclusively expressed in the developing distal limb bones of human embryos and in the first and second pharyngeal arches. It works as a promoter for linear growth and as a repressor of growth plate fusion. It was reported, recently, that SHOX overdosage and gonadal estrogen deficiency have led to tall stature due to continued growth. We report, in the present study, a female patient with 45,X/46,X, psu idic(X)(pter→q21::q21→pter) karyotype, tall stature, and hypergonadotrophic hypogonadism without Turner stigmas. She did not present breast development even after long term therapy with high estrogen doses. Fluorescence in situ hybridization depicted the presence of three copies of SHOX gene. Microsatellite studies showed paternal origin of der(X). Further studies in similarly affected patients will clarify if the absence of breast development, despite previous high-dose estrogen treatment, is associated to triple copy of SHOX gene.

O gene SHOX é expresso, exclusivamente, no primeiro e no segundo arcos faríngeos, assim como nas extremidades dos ossos dos membros em embriões humanos. SHOX normalmente atua como um promotor para o crescimento linear e como um repressor do fechamento da placa de crescimento. Recentemente, foi descrito que o excesso da proteína SHOX associada à deficiência estrogênica gonadal leva à estatura alta devido ao contínuo crescimento. Neste estudo descrevemos uma paciente do sexo feminino com cariótipo 45,X/46,X,psu idic(X)(pter→q21::q21→pter), estatura alta, hipogonadismo hipergonadotrófico e sem estigmas de Turner. A paciente não apresentou desenvolvimento de mamas, mesmo depois do tratamento prolongado com altas doses de estrógenos. FISH evidenciou a presença de três cópias do SHOX. Estudo de microssatélites demonstrou a origem paterna do der(X). Estudos futuros em pacientes com semelhanças clínicas esclarecerão se a ausência de desenvolvimento de mamas, apesar do tratamento com altas doses de estrógenos, está associada à tripla cópia do SHOX.

Update on the etiology, diagnosis and therapeutic management of sexual precocity: [review]

Precocious puberty is defined as the development of secondary sexual characteristics before the age of 8 years in girls and 9 years in boys. Gonadotropin-dependent precocious puberty (GDPP) results from the premature activation of the hypothalamic-pituitary-gonadal axis and mimics the physiological pubertal development, although at an inadequate chronological age. Hormonal evaluation, mainly through basal and GnRH-stimulated LH levels shows activation of the gonadotropic axis. Gonadotropin-independent precocious puberty (GIPP) is the result of the secretion of sex steroids, independently from the activation of the gonadotropic axis. Several genetic causes, including constitutive activating mutations in the human LH-receptor gene and activating mutations in the Gs protein a-subunit gene are described as the etiology of testotoxicosis and McCune-Albright syndrome, respectively. The differential diagnosis between GDPP and GIPP has direct implications on the therapeutic option. Long-acting gonadotropin-releasing hormone (GnRH) analogs are the treatment of choice in GDPP. The treatment monitoring is carried out by clinical examination, hormonal evaluation measurements and image studies. For treatment of GIPP, drugs that act by blocking the action of sex steroids on their specific receptors (cyproterone, tamoxifen) or through their synthesis (ketoconazole, medroxyprogesterone, aromatase inhibitors) are used. In addition, variants of the normal pubertal development include isolated forms of precocious thelarche, precocious pubarche and precocious menarche. Here, we provide an update on the etiology, diagnosis and management of sexual precocity.

A puberdade precoce é definida como o desenvolvimento dos caracteres sexuais secundários antes dos 8 anos nas meninas e dos 9 anos nos meninos. A puberdade precoce dependente de gonadotrofinas (PPDG) resulta da ativação prematura do eixo hipotálamo-hipófise-gonadal e mimetiza o desenvolvimento puberal fisiológico, embora em idade cronológica inadequada. A avaliação hormonal, principalmente os valores de LH basal e após estímulo com GnRH exógeno confirmam a ativação do eixo gonadotrófico. A puberdade precoce independente de gonadotrofinas (PPIG) é o resultado da secreção de esteróides sexuais independentemente da ativação do eixo gonadotrófico. Diversas causas genéticas, incluindo mutações ativadoras constitutivas no gene do receptor do LH humano e mutações ativadoras no gene da subunidade a da proteína G representam as etiologias da testotoxicose e da síndrome de McCune Albright, respectivamente. O diagnóstico diferencial entre PPDG e PPIG tem implicação direta na opção terapêutica. Análogos de GnRH de ação prolongada é o tratamento de escolha da PPDG. A monitorização do tratamento da PPDG é realizada pelo exame clínico, avaliação hormonal e exames de imagem. Para o tratamento da PPIG, são usadas drogas que bloqueiam a ação dos esteróides sexuais nos seus receptores específicos (ciproterona, tamoxifeno) ou bloqueiam a sua síntese (cetoconazol, medroxiprogesterona e inibidores da aromatase). Variantes do desenvolvimento puberal normal incluem as formas isoladas de telarca, pubarca e menarca precoces. Nesta revisão, atualizamos a etiologia, o diagnóstico e tratamento da precocidade sexual.

Premature thelarche: clinical and laboratorial assessment by immunochemiluminescent assay

In order to establish cut-off limits and to distinguish isolated premature thelarche (IPT) from precocious puberty (PP), we evaluated data from 79 girls with premature thelarche, comparing basal and stimulated LH and FSH serum concentrations with those from 91 healthy girls. A GnRH stimulation test was performed in 10 normal girls and in 42 with premature thelarche. Comparison among groups was performed by Kruskal-Wallis and Dunn’s tests. LH values were significantly greater in girls with IPT than in control groups. Basal gonadotropin concentrations were higher in patients with PP than in controls, but not different from patients with IPT. Peak LH levels after GnRH stimulation distinguished those two groups, with a cut-off value of 4.0 IU/L, but still with minimal overlap. In conclusion, a girl with premature thelarche and LH peak value above 4.5 IU/L has, indeed, PP, but values between 3.5 and 4.5 IU/L point to careful follow-up.

Com o objetivo de estabelecer o valor de corte e distinguir telarca precoce isolada (TPI) de puberdade precoce (PP), avaliamos 79 meninas com telarca precoce, comparando as dosagens basais e pós-estímulo de LH e FSH com grupo-controle. O teste de estímulo com GnRH foi realizado em 10 meninas normais e em 42 com telarca precoce. Os testes de Kruskal-Wallis and Dunn foram usados na comparação dos grupos. Os níveis de LH foram significativamente mais elevados no grupo com TPI, quando comparados com controles. As gonadotrofinas basais foram mais elevadas naquelas com PP que nos controles, mas não diferiram do grupo com TPI. O pico de LH após GnRH distinguiu estes dois grupos, com valor de corte de 4,0 UI/L, apesar de pequena sobreposição. Concluímos que uma menina com telarca precoce e LH pós-estímulo acima de 4,5 UI/L apresenta PP, mas valores entre 3,5 e 4,5 UI/L requerem seguimento cuidadoso.

Optimal age of sexual maturation in Egyptian children

To establish the optimal age of sexual maturation in Egyptian children, Tanner's maturity stages were determined for a sample of children and adolescents [1550 girls, 1563 boys] ranging from 6.5 to 18.5 years. The mean age for attainment of pubic hair [stage PH2] was 10.46 [SD 1.36] years for girls and 11.86 [SD 1.45] years for boys. For axillary hair [stage A2], mean age was 11.65 [SD 1.62] years for girls and 13.55 [SD 1.52] years for boys. The mean age at menarche in girls was 12.44 years and for breast development [stage B2] was 10.71 [SD 1.30] years. Testicular volume by palpation showed that the mean age of genital stage G2 for boys was 10.56 [SD 1.40] years. The study results can aid in the assessment of sexual maturation and pubertal disorders in Egyptian adolescents

Graduações de ptose mamária / Classifications of mammary ptosis

A ptose mamária é um distúrbio estético caracterizado pela descida da mama por relaxamento de seus meios de sustentação. Como fenômeno de impactos psicossociais relevantes em nosso meio, o tratamento adequadotorna-se fundamental para o restabelecimento das pacientes afetadas. Para isso, é importante o uso de graduações válidas e precisas que possibilitem um diagnóstico correto. Seis classificações de ptose mamária foram encontradas por meio de um pesquisa eletrônica nas bases de dados LILACS e MEDLINE, no períodode 1951 até 2008. Após análise de cada uma, foi concluído que se faz necessário um estudo bem conduzido, de base populacional, que objetive a validação e a comparação das classificações disponíveis de ptose mamária.

The mammary ptosis is an unaesthetic disorder characterized by the sagging of the breast caused by stretching of supporting tissues. As phenomenon of important psychosocial impacts in our environment, the appropriate treatment is essential for the affected patients’ re-establishment. For that, it is important the use of valid and reliable standards that facilitate the correct diagnosis. Six classifications of mammary ptosis were found by an electronic search in LILACS and MEDLINE in the period between 1951 and 2008. After analysis, we concluded that it’s necessary a good population-based study to validate and compare the available classifications of mammary ptosis.