Adequacy of surgical margins, re-excision, and evaluation of factors associated with recurrence: a retrospective study of 769 basal cell carcinomas

Abstract Background: Achieving adequate surgical margins and preventing recurrence are important in the treatment of basal cell carcinoma (BCC). Objectives: The objectives of this study were to evaluate the adequacy of surgical margins and the re-excision rates in patients with primary BCC who underwent standard surgical treatment using our proposed algorithm and to define the risk factors in patients with recurrent BCC. Methods: The medical records of patients who were histopathologically diagnosed with BCC were reviewed. An algorithm created based on previous literature was used to determine the distribution of optimal surgical margins adequacy and re-excision rates. Results: Statistically significant differences were observed between the cases with and without recurrence in age at diagnosis (p = 0.004), tumor size (p = 0.023), tumor location in the H zone of the face (p = 0.005), and aggressive histopathological subtype (p = 0.000). When the tumors were evaluated for adequacy of deep and lateral surgical margins and re-excision rates, higher rates of adequate excision (457 cases, 68.0%) and re-excision (43 cases, 33.9%) were noted for tumors in the H or M zone. Study limitations: Inadequate follow-up of newly diagnosed patients in terms of recurrence and metastasis and the retrospective application of our proposed algorithm are the limitations of the present study. Conclusions: Our results showed that if BCC was detected at an early age and at an early stage, recurrence was lower. The H and M zones were the regions with the highest rates of optimal surgical outcomes.

Non-melanoma skin cancer: an analysis of compromised margins in excisions / Câncer de pele não melanoma: uma análise do comprometimento de margens em excisões

Introduction: Non-melanoma skin cancer is the most frequent neoplasm in Brazil, with an estimated 176,930 new cases during the 2020-2022 period, with basal cell carcinoma (BCC) and squamous cell carcinoma (SCC) as the most common subtypes. Surgical treatment of the lesions is effective, with a recurrence rate varying between 3 and 23%, with compromised margins being an important prognostic factor for this recurrence, increasing the importance of complete excision of the tumor. Method: To prepare this work, 1127 lesions treated at the Hospital de Amor Amazônia were analyzed, seeking to quantify cases and analyze surgically compromised margins through a retrospective analytical descriptive study. For this, histopathological reports of the operated patients were reviewed, dividing them according to sex, age, lesion topography, date of excision, lesion diameter, lesion depth, presence of ulceration, compromised margins, and histological type. Results: Among the lesions treated, 65% were BCC and 35% SCC, both histological types presenting a low incidence of compromised margins. In cases of CPB impairment, treatment via exeresis was chosen in 100% of cases. Concerning BCC impairment, the majority opted for clinical follow-up, with reapproach in only 9% of cases. Conclusion: This study demonstrates that the cases treated at the Hospital de Amor Amazônia align with the epidemiological data in the main literature, except for finding a higher incidence of non-melanoma skin cancer in men. In addition, this work demonstrates good results in the clinical approach of compromised margins in BCC lesions.

Introdução: O câncer de pele não melanoma é a neoplasia mais frequente no Brasil, com uma estimativa de 176.930 novos casos durante o triênio 2020-2022, tendo o carcinoma basocelular (CBC) e o carcinoma espinocelular (CEC) como subtipos mais presentes. O tratamento cirúrgico das lesões é efetivo, apresentando taxa de recorrência variando entre 3 e 23%, sendo o comprometimento de margens importante fator prognóstico para essa recorrência, aumentando a importância da excisão completa do tumor. Método: Para a elaboração deste trabalho, foram analisadas 1127 lesões abordadas no Hospital de Amor Amazônia, buscando quantificar casos e analisar margens cirurgicamente comprometidas por meio de um estudo descritivo analítico retrospectivo. Para isso, foram revisados laudos histopatológicos dos pacientes operados, dividindo-os de acordo com sexo, idade, topografia da lesão, data de excisão, diâmetro da lesão, profundidade da lesão, presença de ulceração, comprometimento de margens e tipo histológico. Resultados: Dentre as lesões abordadas, 65% eram CBC e 35% CEC, ambos os tipos histológicos apresentando baixa incidência de margens comprometidas. Nos casos de comprometimento em CEC, optou-se pelo tratamento via exérese em 100% dos casos. Já em relação ao comprometimento em CBC, optou-se majoritariamente pelo acompanhamento clínico, com reabordagem em apenas 9% dos casos. Conclusão: Este estudo demonstra que os casos abordados no Hospital de Amor Amazônia vão ao encontro dos dados epidemiológicos presentes nas principais literaturas, com ressalva, apenas, ao encontrar uma maior incidência de câncer de pele não melanoma em homens. Além disso, esse trabalho demonstra bons resultados na abordagem clínica de margens comprometidas em lesões de CBC.

Robotic approach to remove four tailgut cyst cases in Brazil: a case series

ABSTRACT Tailgut cysts are rare congenital lesions that are remnants of the embryonic hindgut. This abnormality presents with non-specific symptoms or no symptoms; therefore, misdiagnosis is common. Here, we present four cases of tailgut cysts that were successfully removed using a robotic surgical approach. A 42-year-old woman with tenesmus, pain in the right gluteal region, and discomfort in the rectal region during evacuation was referred to our medical center. Another patient was a 28-year-old woman who presented with the same symptoms to our general practitioner. Both patients underwent upper abdominal and pelvic magnetic resonance imaging that revealed a tailgut cyst. Further, a 36-year-old woman was referred with coccyx and hypogastric pain. Magnetic resonance imaging revealed two pararectal cystic formations. She underwent robot-assisted surgery, and after analysis by a pathologist, the conclusion was that the tailgut cyst was associated with scarring fibrosis. A 55-year-old woman with posterior epigastric pelvic pain associated with heartburn underwent robot-assisted surgery to resect a retroperitoneal tumor. These cases highlighted the importance of tailgut cysts in the differential diagnosis of rectal lesions. Surgical treatment is preferred because malignant transformations can occur. The difference between laparoscopic and robotic approaches is the better visualization and stability of the latter, inducing less tissue damage. Robotic resection is a safe procedure, especially in patients with a narrow pelvis, because it reduces tissue damage.

Oncologic outcomes of microscopic tumor cut-through in locally advanced oral squamous cell carcinoma

Introduction: The gold standard treatment of oral cavity squamous cell carcinoma (OCSCC) is surgical resection; however, standardization of the margins and the role of frozen section are still debatable. Microscopic tumor cut-thought (MTCT) occurs when the surgeon has an initial positive frozen section margin that is cleared with further resection to negative. Objective: This study aims to determine the impact of MTCT on local recurrence and disease-specific survival in patients with locally advanced T3-T4 OCSCC and compare it with other clinicopathological variables. Methods: A retrospective database analysis of patients diagnosed with locally advanced T3-T4 OCSCC surgically treated and submitted to intraoperative frozen section guiding the margin status. Survival was analyzed using the Kaplan-Meier estimator followed by the Cox model for multivariate analysis. Results: We analyzed 475 patients who met inclusion criteria: MTCT occurred in 29 patients (6.11%) and local recurrence was observed in 131 patients (27.6%). MTCT had an impact on univariate (HR 2.205; 95% CI 1.243 ­ 3.914; p=0.007) and multivariate (HR 1.851; 95% CI 1.285 ­ 2.666; p=0.001) analyses. Similar results were found for disease-specific survival: univariate (HZ 1.669; 95% CI 1.056 ­ 2.635; p=0.028) and multivariate (HZ 1.307; 95% CI 0.816 ­ 2.092; p=0.265) analyses. A total of 231 patients (48.6%) had died of cancer by the end of follow-up. The best predictor for compromised frozen sections was tumor depth of invasion. Conclusion: Even after negative final margins, MTCT is an important factor associated with poorer outcome, and treatment intensification should be considered in these patients.

Tumores de pele não melanoma: estudo retrospectivo do perfil epidemiológico e desfecho a partir de margens comprometidas / Non-melanoma skin tumors: a retrospective study of the epidemiological profile and outcome from compromised margins

Introdução: Os carcinomas de pele do tipo não melanoma são responsáveis por 30% dos tumores malignos no Brasil. O objetivo deste artigo foi avaliar o perfil epidemiológico e a conduta tomada a partir do diagnóstico histopatológico de margens comprometidas em pacientes com carcinomas de pele do tipo não melanoma tratados primariamente com cirurgia. Métodos: Estudo tipo coorte retrospectivo observacional. Os dados foram coletados de prontuário eletrônico de 1495 pacientes, apresentando 2457 carcinomas de pele do tipo não melanoma, operados entre janeiro de 2015 a dezembro de 2019. Resultados: Houve maior prevalência em homens (52,4%) e entre a sexta e a sétima décadas de vida (41,1%). O carcinoma basocelular foi o tipo histológico mais comum (75%). O risco de desenvolver carcinoma espinocelular foi 57,2% maior em pacientes com idade acima de 61 anos (risco relativo=1,572 (IC 95%: 1,316-1,878; p<0,0001)). Margens comprometidas foram reportadas em 15,8% dos casos, sendo mais comuns na face (19,5%) e nos pacientes com carcinoma espinocelular (p<0,05), com risco relativo=1,382 (IC95%:1,135-1,683; p=0,0013). Tratamento adicional foi indicado em 74,6% dos casos, sendo as condutas mais comuns a ampliação de margens (55,6%) e radioterapia (42,4%). A escolha entre intervenção ou observação apresentou relação com o tipo histológico (p<0,05), porém não foi possível afirmar sua relação com a faixa etária (p>0,05). Conclusão: O estudo possibilitou melhor compreensão do perfil dos pacientes com carcinomas de pele do tipo não melanoma, bem como o percentual de margens comprometidas após excisão cirúrgica inicial e o tratamento realizado.

Introduction: Non-melanoma skin neoplasms are responsible for 30% of all malignant tumors in Brazil. The main objective of this article was to evaluate the epidemiological profile and the approach taken from the histopathological diagnosis of compromised margins in patients with non-melanoma skin neoplasms treated primarily with surgery. Methods: This is an observational retrospective cohort. Data were collected from electronic medical records of 1495 patients, resulting in 2457 non-melanoma skin neoplasms, from January 2015 to December 2019. Results: There was a higher prevalence in men (52.4%) and between the sixth and seventh decades of life ( 41.4%). Basal cell carcinoma was the most common histological type (75%). Those over the age of 61 are 57.2% more likely to develop basal cell carcinoma (relative risk=1,572 (95% CI: 1,316-1,878; p<0. 0001). Compromised margins were reported in 15.8% of cases, being more common on the face (19.5%) and in patients with basal cell carcinoma (p<0.05), with relative risk=1,382 (95%CI: 1,135-1,683; p=0.0013). Additional treatment was indicated in 74.6% of cases, with the most common approaches being margin expansion (55.6%) and radiotherapy (42.4%). The choice between intervention or observation was related to the histological type (p<0.05), but it was not possible to affirm its relationship with the age group (p>0.05). Conclusion: The study allowed a better understanding of the profile of patients with non-melanoma skin neoplasms and the percentage of compromised margins after initial surgical excision and the treatment performed.

The impact of multivisceral liver resection on short- and long-term outcomes of patients with colorectal liver metastasis: A systematic review and meta-analysis

Abstract The impact of Multivisceral Liver Resection (MLR) on the outcome of patients with Colorectal Liver Metastasis (CRLM) is unclear. The present systematic review aimed to compare patients with CRLM who underwent MLR versus standard hepatectomy regarding short- and long-term outcomes. MLR is a feasible procedure but has a higher risk of major complications. MLR did not negatively affect long-term survival, suggesting that an extended resection is an option for potentially curative treatment for selected patients with CRLM.

Carcinoma de células basales en la región vulvar: revisión bibliográfica a propósito de un caso / Vulvar basal cell carcinoma: A case report and review of the literature

Resumen ANTECEDENTES: El carcinoma de células basales, o basocelular, es la neoplasia cutánea no melanocítica más frecuente en la raza caucásica. La mayor parte de estas neoplasias aparecen en la piel fotoexpuesta (casi el 85% en la cabeza y el cuello). La afectación vulvar tiene una frecuencia no mayor al 1 al 2% de todos los carcinomas basocelulares. OBJETIVO: Reportar un caso de carcinoma basocelular de localización vulvar y revisar la bibliografía de los últimos siete años. CASO CLÍNICO: Paciente de 74 años, sin antecedentes personales de interés, con una lesión vulvar asintomática, con varios meses de evolución. En la exploración genital se encontró, en el labio mayor izquierdo, una lesión de 3 cm, pálida, no ulcerada, sobreelevada y pétrea. La biopsia de la lesión reportó: tejido mamario accesorio. Ante este informe se decidió la exéresis de la lesión y dejar un margen quirúrgico aproximado de 1 cm. La intervención y el posoperatorio transcurrieron sin contratiempos. El estudio anatomopatológico de la pieza quirúrgica reportó que se trataba de un carcinoma ulcerado de células basales, nodular y superficial, con los bordes de resección libres. En el seguimiento posquirúrgico a los dos meses, la paciente se encontró en buenas condiciones, asintomática. CONCLUSIONES: Si bien el carcinoma basocelular es una neoplasia muy frecuente, la afectación vulvar es por demás rara. El diagnóstico y el tratamiento deben ser interdisciplinarios, de la mano de dermatólogos y gineco-oncólogos.

Abstract BACKGROUND: Basal cell carcinoma, or basal cell carcinoma, is the most common nonmelanocytic skin neoplasm in Caucasians. Most of these neoplasms occur on photo exposed skin (almost 85% on the head and neck). Vulvar involvement has a frequency of no more than 1% to 2% of all basal cell carcinomas. OBJECTIVE: To report a case of basal cell carcinoma of vulvar location and to review the literature of recent years. CLINICAL CASE: 74-year-old patient, with no personal history of interest, with an asymptomatic vulvar lesion, with several months of evolution. On genital examination, a 3 cm lesion was found on the left labium majus, pale, non-ulcerated, raised, and stony. The biopsy of the lesion reported: accessory breast tissue. In view of this report, it was decided to excise the lesion and leave a surgical margin of approximately 1 cm. The operation and postoperative period went smoothly. The anatomopathological study of the surgical specimen reported that it was an ulcerated basal cell carcinoma, nodular and superficial, with free resection margins. At two months post-surgical follow-up, the patient was found to be in good condition, asymptomatic. CONCLUSIONS: Although basal cell carcinoma is a very frequent neoplasm, vulvar involvement is very rare. Diagnosis and treatment should be interdisciplinary, with the collaboration of dermatologists and gyneco-oncologists.

Factors associated with incomplete surgical margins in basal cell carcinoma of the head and neck / Fatores associados a margens cirúrgicas incompletas no carcinoma basocelular de cabeça e pescoço

Abstract Introduction: Cutaneous basal cell carcinoma recurrence is associated with inadequate surgical margins. The frequency of and the factors associated with compromised or inadequate surgical margins in head and neck basal cell carcinoma varies. Objective: The purpose of this study was to evaluate the clinical and pathological factors associated with inadequate surgical margins in head and neck basal cell carcinoma. Methods: We developed a cross-sectional study comprising all patients who had undergone resection of head and neck basal cell carcinoma from January 2017 to December 2019. Data on age, sex, head and neck topography, histopathological findings, and staging were retrieved and compared. Each tumor was considered an individual case. Compromised and close margins were termed ''inadequate'' or ''incomplete''. Variables that were significantly associated with the presence of incomplete margins were further assessed by logistic regression. Results: In total, 605 tumors from 389 patients were included. Overall, sixteen cases (2.6%) were classified as compromised, 52 (8.5%) as close, and 537 (88.7%) as free margins. Presence of scleroderma (p = 0.005), higher Clark level (p < 0.001), aggressive variants (p < 0.001), invasion beyond the adipose tissue (p < 0.001), higher T stage (p < 0.001), perineural invasion (p = 0.002), primary site (p = 0.04), multifocality (p = 0.01), and tumor diameter (p = 0.02) showed association with inadequate margins. After Logist regression, multifocality, Clark level and depth of invasion were found to be independent risk factors for inadequate margins. Conclusion: Gross clinical examination may be sufficient for determining low prevalence of inadequate surgical margins when treating head and neck basal cell carcinoma in highly experienced oncologic centers. Multifocality, Clark level and depth of invasion were found to be independent risk factors for incomplete margins.

Resumo Introdução: A recorrência do carcinoma basocelular (CBC) cutâneo está associada a margens cirúrgicas inadequadas. A frequência e os fatores associados a margens cirúrgicas comprometidas ou inadequadas no carcinoma basocelular de cabeça e pescoço variam. Objetivo: Avaliar os fatores clínicos e patológicos associados a margens cirúrgicas inadequadas no carcinoma basocelular de cabeça e pescoço. Método: Conduzimos um estudo transversal que abrangeu todos os pacientes submetidos à resseçcão de carcinoma basocelular de cabeça e pescoço de janeiro de 2017 a dezembro de 2019. Dados sobre idade, sexo, topografia na cabeça e pescoço, achados histopatológicos e estadiamento foram recuperados e comparados. Cada tumor foi considerado como um caso individual. As margens comprometidas e próximas foram denominadas ''inadequadas'' ou ''incompletas''. As variáveis que foram significantemente associadas à presença de margens incompletas foram avaliadas adicionalmente por regressão logística. Resultados: Foram incluídos 605 tumores de 389 pacientes. No geral, 16 casos (2,6%) foram classificados como comprometidos, 52 (8,5%) como próximos e 537 (88,7%) como margens livres. Presença de esclerodermia (p = 0,005), nível de Clark mais elevado (p < 0,001), variantes agressivas (p < 0,001), invasão além do tecido adiposo (p < 0,001), estágio T mais avançado (p < 0,001), invasão perineural (p = 0,002), sítio primário (p = 0,04), multifocalidade (p = 0,01) e diâmetro do tumor (p = 0,02) mostraram associação com margens inadequadas. Após a regressão logística, a multifocalidade, o nível de Clark e a profundidade de invasão foram considerados fatores de risco independentes para margens inadequadas. Conclusão: O exame clínico macroscópico pode ser suficiente para determinar baixa prevalência de margens cirúrgicas inadequadas no tratamento do carcinoma basocelular de cabeça e pescoço em centros oncológicos altamente experientes. Multifocalidade, nível de Clark e profundidade de invasão foram considerados fatores de risco independentes para margens incompletas.

Estudo epidemiológico da associação entre fatores de risco e excisões incompletas no câncer de pele / An epidemiological study of the association between risk factors and skin cancer incomplete excisions

Introdução: A crescente incidência de câncer de pele leva a um alto número de procedimentos cirúrgicos em todo o mundo. O principal objetivo do tratamento cirúrgico do câncer de pele é sua excisão completa, preservando a função e o melhor resultado estético. A ressecção inicial incompleta pode resultar em recorrências e danos graves. O objetivo é analisar os fatores de risco para margens positivas no seguimento de lesões cutâneas removidas cirurgicamente, por um ano, no departamento de cirurgia plástica do Hospital Royal Perth. Métodos: Foi analisado um levantamento de amostras histopatológicas de 947 pacientes operados. Todos os pacientes com excisão incompleta confirmada (EI) foram submetidos a uma segunda cirurgia ou até mesmo a uma terceira vez. Resultados: No total, 947 lesões foram encontradas, 6,6% das cirurgias tiveram margens comprometidas, com distribuição histopatológica de 75% de carcinoma basocelular (CBC), 21,4% de carcinoma de células escamosas (CCE) e 3,6% de outras lesões. A relação da presença de margens cirúrgicas comprometidas entre o CCE, quando comparada ao CBC, leva a um risco relativo de 2,8 e um valor p de 0,041, sugerindo que o primeiro é um fator de risco para a presença de margens cirúrgicas comprometidas. Para o estadiamento, a necessidade de uma segunda abordagem cirúrgica esteve presente em 61,29% dos pacientes, 20,9% estavam em observação, 3,2% estavam ausentes do serviço, 8% foram diretamente à quimioterapia ou radioterapia e 6,4% remarcaram a cirurgia. Conclusão: O conhecimento dos fatores de risco para margens positivas é necessário para que o cirurgião entenda o prognóstico e o acompanhamento de cada paciente.

Introduction: The increasing incidence of skin cancer leads to a high number of surgical procedures worldwide. The surgical treatment of skin cancer's main objective is its complete excision, preserving the function and the best aesthetic result. Incomplete initial resection can result in recurrences and major damage. The objective is to analyze the risk factors for positive margins in the follow-up of cutaneous lesions surgically removed, for one year, in the plastic surgery department of the Royal Perth Hospital. Methods: A survey of histopathological samples from 947 operated patients was analyzed. All patients with confirmed incomplete excision (IE) underwent a second surgery or even a third time. Results: In total, 947 lesions were found, 6.6% of surgeries had compromised margins, with a histopathological distribution of 75% of basal cell carcinoma, 21.4% of squamous cell carcinoma, and 3.6% of other lesions. The relation of the presence of compromised surgical margins between the SCC, compared to BCC, leads to a relative risk of 2.8 and a p-value of 0.041, which suggests that the SCC is a risk factor for the presence of compromised surgical margins. For staging, the need for a second surgical approach was present in 61.29% of the patients, 20.9% were under observation, 3.2% were absent from the service, 8% went directly to chemotherapy or radiotherapy, and 6.4% rescheduled the surgery. Conclusion: Knowledge of risk factors for positive margins is necessary for the surgeon to understand the prognosis and monitoring of each patient.

Research advances in surgical margin of hilar cholangiocarcinoma / 临床肝胆病杂志

Hilar cholangiocarcinoma (HCCA) is the most common biliary malignancy, and surgical operation is the only possible treatment method at present. The nature of surgical margin is an important influencing factor for the long-term survival of patients, and radical resection can bring great survival benefits to patients. The determination of radial margin for HCCA can help to evaluate the nature of surgical margin and predict the prognosis of patients more accurately. This article reviews the latest research advances in the surgical margin of HCCA.

Risk stratified management of cervical adenocarcinoma in situ based on cone margin state / 中华妇产科杂志

Objective:To investigate the hierarchical management scheme of cervical adenocarcinoma in situ (AIS) based on cervical conization margin state.Methods:All medical records of 249 patients diagnosed as AIS by loop electrosurgical excision procedure (LEEP) conization from Jan. 2010 to Dec. 2015 in Obstetrics and Gynecology Hospital of Fudan University were retrospectively reviewed, to explore the relationship between the status of the resection margin and the residual lesion after LEEP, and the multivariate logistic regression method was used to analyze the related factors that affect the residual lesion after LEEP in cervical AIS patients.Results:(1) The age of 249 cervical AIS patients was (40±8) years old (range: 23-71 years old). Of the 249 patients, 19 (7.6%, 19/249) had residual lesions; 69 cases were pathologically diagnosed as AIS after LEEP, and the residual lesion rate was 13.0% (9/69), which was significantly higher than that of AIS + high-grade squamous intraepithelial lesion [5.6% (10/180); χ2=3.968, P=0.046]; 33 cases were multifocal lesions, the residual rate of lesions was 21.2% (7/33), which was significantly higher than that of single focal lesions patients [5.6% (12/216); χ2=7.858, P=0.005]; 181 patients underwent endocervical curettage (ECC) before surgery, the residual rate of lesions in ECC-positive patients was 14.0% (14/100) , significantly higher than that of ECC-negative patients [4.9% (4/81); χ2=4.103, P=0.043]. (2) Among 249 cases of AIS patients, the positive rate of resection margins after LEEP was 35.3% (88/249); the residual rate of lesions in patients with positive resection margins (14.8%, 13/88) was significantly higher than those with negative margins [3.8%(6/156); χ2=9.355, P=0.002]. The age of patients underwent total hysterectomy after LEEP was (43±7) years old, which was significantly higher than that of patients who did not undergo total hysterectomy [(37±8) years old; t=6.518, P<0.01].Among the patients underwent total hysterectomy after LEEP, 3 cases (2.0%, 3/152) had fertility requirements, while 38 cases (39.2%, 38/97) did not underwent total hysterectomy, the difference between the two groups was statistically significant ( χ2=59.579, P<0.01). Among the 152 patients who underwent total hysterectomy after LEEP, the residual rate of lesions was 11.8% (18/152); the residual rate of lesions in patients with positive resection margins was significantly higher than that of patients with negative resection margins [18.8% (12/64) vs 7.0% (6/86); χ2=4.861, P=0.028]. The median follow-up time of 97 patients who did not undergo total hysterectomy after LEEP was 32 months (range: 4-70 months). During the follow-up period, 3 cases of cervical AIS recurrence (3.1%, 3/97) and were followed by hysterectomy,no invasive adenocarcinoma were seen. (3) Multivariate logistic regression analysis showed that the positive resection margin ( OR=4.098, 95% CI: 1.235-13.595, P=0.021), multifocal lesions ( OR=5.464, 95% CI: 1.494-19.981, P=0.010) were independent risk factors that affected the residual lesions in patients with cervical AIS after LEEP. Conclusions:The cervical AIS patients after LEEP conization suggested be stratified by cone margin state as the first-line stratified index, age and fertility needs as the second-line stratified management index. The individualized management plan should be developed based on comprehensive assessment of high-risk factors of residual lesions.

Management of Recurrence of Ameloblastoma and Odontogenic Keratocyst: A Cross-Sectional Study / Manejo de la recurrencia del ameloblastoma y keratoquiste odontogénico: Estudio de corte transversal

Abstract Objectives: Odontogenic keratocyst (OKC) and ameloblastoma are slowly growing and locally invasive tumors with high recurrence rate. The aim of this study was to investigate the clinicopathologic features of recurrent ameloblastoma and OKC cases, and evaluate outcomes of our treatments in terms of recurrence. Material and Methods: A total of 23 patients with confirmed recurrent ameloblastoma or OKC and treated in our clinic within eleven years period were reviewed retrospectively. Results: Eleven recurrent OKC cases and twelve recurrent ameloblastoma cases were included. Most recurrences occurred within five years after the initial treatment (69.6%). Enucleation had the highest recurrence rate among the first treatments (18/23). All recurrences were located in the mandible, with one exception (22/23). All recurrent OKCs were multilocular. Different histopathologic subtypes of ameloblastoma were seen in our study, follicular ameloblastoma was the most common (8/12). The mean diameter of the lesions was 4.3 cm (ranging from 2 cm to 7 cm). Statically significant relation was found between location and diameter of lesion and year of recurrence onset (p=0.004; p=0.026). We performed radical treatments in these cases (ten patients underwent marginal resections, and thirteen patients underwent segmental resection), and no recurrence was observed during the follow-up period. Conclusion: Previous inadequate surgical procedures were the most important cause of recurrence. Marginal or segmental resection with safety margins is the best method to treat recurrences of OKC or ameloblastoma cases.

Resumen Objetivo: Los keratoquistes odontogénicos (KQO) y ameloblastomas son tumores invasivos de lento crecimiento local con una alta tasa de recurrencia. El propósito de este estudio fue investigar las características clínico patológicas de los casos de ameloblastoma y KQO recurrentes y evaluar los resultados de tratamientos en término de recurrencia. Materiales y Métodos: Un total de 23 pacientes con casos confirmados de ameloblastomas o KQO recurrentes tratados en nuestra clínica en un período de once años fueron incluidos. Resultados: Once casos de KQO recurrentes y doce ameloblastomas recurrentes fueron incluidos. La mayoría de las recurrencias ocurrieron en los primeros 5 años posteriores al tratamiento inicial (69.6%). La enucleación mostró la tasa de recurrencia más alta entre los tratamientos iniciales (18/23). Todas las recurrencias se presentaron en la mandíbula excepto por un caso (22/23). Todos los KQO fueron multiloculares. Distintos subtipos histológicos del ameloblastoma fueron detectados en el estudio y el ameloblastoma folicular fue el más común (8/12). El diámetro promedio de las lesiones fue de 4.3cm en un rango de 2cm a 7cm. Una relación estadísticamente significativa se encontró entre la ubicación y el diámetro de la lesión y el tiempo de aparición de la recurrencia (p=0.004; p=0.026). Se realizaron tratamientos radicales en los siguientes casos, diez pacientes tuvieron resecciones marginales y trece pacientes resección segmental; no se observaron recurrencias en el período de seguimiento. Conclusión: Procedimientos previos inadecuados fueron la causa más relevante de recurrencia. Resección marginal o segmental con márgenes de seguridad son el mejor método para tratar casos de ameloblastoma y KQO recurrentes.

Meningioma primario intraóseo esfenotemporal: presentación de caso / Primary spheno-temporal intra-osseous meningioma: a case report

RESUMEN Fundamento: los meningiomas ectópicos, definidos como aquellos que no tienen ninguna conexión con la duramadre, poco frecuentes. Son una variante rara y representan cerca del uno por ciento de todos los meningiomas intracraneales. Objetivo: presentar una variante poco frecuente de un meningioma ectópico como causa de proptosis y oftalmoparesia encontrado en una paciente joven. Presentación del caso: paciente de 40 años de edad, que hace seis meses comenzó con dolor en el ojo derecho de moderada intensidad, aumento de volumen de la región frontorbitaria, disminución de la agudeza visual y visión doble. Los estudios de tomografía axial computarizada y resonancia magnética de cráneo y órbita mostraron lesión extraaxial a nivel de la pared lateral de la órbita con extensión extra e intraorbitaria con compresión de estructuras adyacentes que provocó desplazamiento anterior del globo ocular. Se realizó tratamiento quirúrgico con excéresis y el estudio histológico concluyó un meningioma meningotelial ectópico del hueso grado I. Conclusiones: los meningiomas ectópicos resultan poco frecuentes, el tratamiento quirúrgico con la resección total de la lesión es la elección para evitar recurrencias y pueden tener indicación de tratamiento oncológico complementario.

ABSTRACT Background: ectopic meningioma, defined as those that have no connection with the dura mater, are rare. They are a rare variant and represent approximately 1 % of all intracranial meningioma. Objective: to present a rare variant of an ectopic meningioma as a cause of proptosis and ophthalmoparesis found in a young patient. Case report: patient of 40 years of age, who 6 months ago began with pain in the right eye of moderate intensity, increased volume of the front-orbital region, decreased visual acuity and double vision. Computed tomography and MRI of the skull and orbit showed extra-axial lesion at the level of the lateral wall of the orbit with extra and intra-orbital extension with compression of adjacent structures that caused anterior displacement of the eyeball. Surgical treatment was performed with resection and the histological study concluded an ectopic meningotial meningioma of bone grade I. Conclusions: ectopic meningioma are infrequent, surgical treatment with total resection of the lesion is the choice to avoid recurrences and may have an indication of complementary oncological treatment.

Correlation between the proportion of healthy mammary tissue versus tumor size in breast-conserving surgeries

Objective: To evaluate the proportion of excised healthy tissue in breast-conserving surgeries and to identify possible tendency toward excision in healthy tissue beyond the ideal for oncological safety. Methods: Data from patients who underwent breastconserving surgery at the Hospital Geral de Caxias do Sul from January 2010 to December 2016 were analyzed. For statistical purposes, means, standard deviations, Student's t-test, and linear regression were used for numerical variables. Risk estimate by odds ratio (OR) was performed through logistic regression with 95% CI. A significance level (alpha) of 5% was adopted. Results: A total of 124 cases were analyzed. The mean tumor size observed by ultrasonography was 1.7 ± 0.95 cm. The tumor size was 1.9 ± 1.12 cm. The mean size of the resected surgical specimens was 7.8 ± 3.4cm. When comparing the tumor size in the anatomopathological examination and the size in ultrasonography, the mean differences accounted for 0.6 cm (95%CI -0.10­ 0.44; p = 0.2). Conversely, the difference in the size of the total surgical specimen versus tumor size in the anatomopathological examination was 5.8 cm (95%CI 5.2­6.5; p < 0.001). There was no statistical difference regarding the tumor location nor size of the surgical specimen. Conclusion: It was observed that there is a tendency toward excising a large amount of healthy tissue in breastconserving surgeries far beyond what is recommended in order to consider the oncological safety of excised margins.

Actualidad en fístula pancreática postoperatoria / Current status in postoperative pancreatic fistula

RESUMEN Fundamento: el cáncer de páncreas presenta una alta mortalidad, producto que la mayoría de las veces se diagnóstica en etapa avanzada. El tratamiento de elección es la resección quirúrgica, la cual debida a su complejidad está acompañada de una morbimortalidad importante, cuando no se realiza en centros de alto volumen. Dentro de las complicaciones, la fístula pancreática postoperatoria, es de aparición frecuente. Objetivo: realizar una revisión sistemática actualizada acerca del concepto y clasificación de la fístula pancreática postoperatoria. Métodos: se realizó una revisión sistemática de la literatura con la base de datos SCOPUS bajo los criterios que establecen sus revisores, se utillizaron las siguientes palabras claves: pancreatic fistula, pancreatic surgery, complications, mortality, Whipple procedure. Se incluyeron todas las publicaciones en inglés y español. El método de análisis y síntesis se utilizó para la interpretación de la bibliografía. Resultados: se revisaron 175 artículos, de los cuales, se escogieron 55, que cumplían con los criterios de selección. Entre ellos, cuatro metanálisis, ocho artículos de revisión y 33 artículos originales. Conclusiones: el concepto y clasificación de la fístula pancreática postoperatoria constituye una herramienta válida para la comparación de resultados quirúrgicos entre instituciones. La centralización de la atención en centros de alto volumen constituye la principal medida para disminuir esta complicación.

ABSTRACT Background: pancreatic cancer presents a high mortality, a product that most of the time is diagnosed in advanced stage. The treatment of choice is surgical resection, which due to its complexity is accompanied by significant morbidity and mortality when it is not performed in high-volume centers. Among the complications, the postoperative pancreatic fistula is of frequent appearance. Objective: to carry out an updated systematic review about the concept and classification of postoperative pancreatic fistula. Methods: a systematic review of the literature was carried out using the SCOPUS database under the criteria established by its reviewers, using the following keywords: pancreatic fistula, pancreatic surgery, complications, mortality, Whipple procedure. All publications in English and Spanish were included. The method of analysis and synthesis was used for the interpretation of the bibliography. Results: 175 articles were reviewed, of which 55 were chosen that met the selection criteria. Among them, 4 meta-analyzes, 8 review articles and 33 original articles. Conclusions: the concept and classification of postoperative pancreatic fistula constitutes a valid tool for the comparison of surgical results between institutions. The centralization of care in high-volume centers is the main measure to reduce this complication.

The impact of single positive surgical margin features on biochemical recurrence after robotic radical prostatectomy

ABSTRACT Objective: Parameters predictive of biochemical or clinical recurrence after Radical Prostatectomy (RP) were determined as pre-treatment PSA value, pathologic tumor stage, tumor grade and presence of Positive Surgical Margin (PSM), extracapsular extension and seminal vesicle invasion and the status of pelvic lymph nodes. The aim of our study is to evaluate the effect of additional features in patients undergoing RP in our clinic. Materials and Methods: We studied 556 RP operations performed between 2009 and 2016 for prostate cancer at this clinic. Preoperative and postoperative data of the patients were retrospectively reviewed. RP specimens were examined by two pathologists specialized in this subject. Of these patients, 78 (14.02%) patients with PSM were included in the study. The pathology slides of these patients were reassessed. The length of PSM (mm), localization (apex, basis and posterolateral) and Gleason pattern at this margin was determined and statistical correlations with BCR were calculated. Results: The mean follow-up after the RP of 41 patients included in the study was 37.4 ± 13.2 months. During the follow-up period of the patients, BCR was observed in 16 patients (39.02%). No statistically significant difference was observed in age and prostate volume between the groups with and without BCR development (p > 0.05). Preoperative PSA level was found to be statistically significantly higher in the group with BCR development compared to the group without recurrence (p = 0.004). In-group comparisons in each aforementioned Gleason score groups were performed in terms of BCR development and the preoperative Gleason score in the group with development of recurrence was found to be statistically significantly higher compared to the group without recurrence (p = 0.007). The length of the surgical margin was measured as 7.4 ± 4.4 mm in the BCR-developing group and 4.7 ± 3.8 mm in the no-BCR- developing group; it was statistically significantly higher in the group with development of recurrence (p = 0.03). Conclusion: Length and location of the PSM and the Gleason score detected in the PSM region could not predict biochemical recurrence according to the results of this present study. However high preoperative PSA value is an independent prognostic factor for biochemical recurrence.

Measuring Tumor Extent Based on Subtypes Using Magnetic Resonance Imaging: Radiologic-Pathologic Discordance and High Positive Margin Rates in Breast Cancer / 한국유방암학회지

PURPOSE: We evaluated the clinical value of breast magnetic resonance imaging (MRI) in patients who underwent breast-conserving surgery (BCS). The degree of correlation between pathology size and MRI or ultrasonography (US) size was compared based on breast cancer subtypes. In addition, we investigated the positive margin rates. METHODS: Patients with invasive breast cancer who underwent preoperative breast MRI and US between 2011 and 2016 were included in the study. Lin's concordance correlation coefficient was used to measure the correlation between MRI or US andpathologic tumor extent. Tumor extent was defined as pathologic tumor size, including in situ carcinoma. Margin positivity was assessed based on frozen-section examination. RESULTS: A total of 516 patients with a single tumor who underwent BCS were included in the study. The correlation between pathologic size and MRI was significantly higher than that of US (r = 0.6975 vs. 0.6211, p = 0.001). The superiority of MRI over US in measuring the pathologic extent was only observed in triple-negative breast cancer (TNBC; r = 0.8089 vs. 0.6014, p < 0.001). The agreement between MRI or US and tumor extent was low for the human epidermal growth factor receptor 2 (HER2)-positive subtype (MRI: 0.5243, US: 0.4898). Moreover, the positive margin rate was higher in the HER2-positive subtype than in the others (luminal/HER2-negative: 11.6%, HER2-positive: 23.2%, TNBC: 17.8%, p = 0.019). The post hoc analysis showed that the HER2-positive subtype was more likely to show positive margins than the luminal/HER2-negative subtype (p = 0.007). CONCLUSION: Breast MRI was superior to US in the preoperative assessment of the pathologic extent of tumor size; this was most evident in TNBC. For HER2-positive tumors, imaging-pathologic discordance resulted in higher positive margin rates than that with other subtypes.

Application of indocyanine green fluorescence imaging in open hepatectomy / 中华肝胆外科杂志

Objective@#To investigate the clinical application of indocyanine green fluorescence imaging in open hepatectomy.@*Methods@#A total of forty-five patients who underwent liver resection in Department of Hepatobiliary Surgery, Affiliated Hospital of Southwest Medical University from July 2017 to December 2018 were included in this prospective study. There were 26 males and 19 females, aged between 29 to 74 (51±10) years. Indocyanine green was injected intravenously 72~96 hours prior to surgery in all these patients. An intraoperative fluorescence imaging system was used to locate and remove the tumor, the liver parenchymal transection planes and surgical margins were detected by fluorescence again after tumor resection. The fluorescence profiles of the tumor specimens in relation to the tumor differentiation were analyzed.@*Results@#Indocyanine green fluorescence imaging was performed in 45 patients. A total of 66 lesions were detected by preoperative CT (or MRI), abdominal ultrasound and intraoperative fluorescence imaging. After excision of the primary liver cancer, the surgical margins of the remnant liver stumps and fluorescence in the excised liver specimens were studied. Thirteen small lesions were found in 10 patients, most of which were located at the surgical margin, and the smallest tumors detected were less than 5 mm in diameter. Five venous cancer emboli were found in 5 patients, 3 of which were not detected by preoperative imaging examinations. The fluorescence profile images of the excised hepatocellular carcinoma specimens showed homogeneous fluorescence in most highly differentiated hepatocellular carcinoma, and partial fluorescence or ring fluorescence in moderately differentiated hepatocellular carcinoma.@*Conclusion@#Indocyanine green fluorescence imaging technology can identify liver surface lesions, as well as detect small residual lesions at the cutting edge and venous thrombus, which improves the efficiency of hepatocellular carcinoma resection.

Intraoperative Specimen Mammography for Margin Assessment in Breast-Conserving Surgery / 한국유방암학회지