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1.
Article in Spanish | LILACS, CUMED | ID: biblio-1441594

ABSTRACT

Introducción: El mieloma múltiple con expresión de inmunoglobulina M de superficie constituye una enfermedad rara cuya causa es desconocida y se caracteriza por una alta tasa de anormalidades genéticas en las células plasmáticas o sus precursores. Objetivo: Determinar las características clínicas y sus asociaciones con la expresión inmunofenotípica de inmunoglobulina M de superficie e inmunohistoquímica de CD20 en una paciente afectada de mieloma múltiple precedido por síndrome mielodisplásico. Presentación del caso: Paciente femenina, 68 años de edad. Admitida en el Servicio de Hematología Clínica. Al momento del diagnóstico presentó palidez, trombocitopenia, hipercalcemia y lesiones óseas. Inicialmente, mediante citometría de flujo se detectaron patrones aberrantes para granulocitos, neutrófilos, monocitos y serie eritroide, sugerentes de síndrome mielodisplásico. Posteriormente se observó aumento de las células plasmáticas del 18 % en el frotis de médula ósea, exhibiendo una morfología similar a linfocitos. Se reportó una población patológica de 6 % de la celularidad total, mostrando positividad para CD38, CD117 e inmunoglobulina M de superficie, negatividad para CD19 y CD45, fenotipo coherente con células plasmáticas anormales. Adicionalmente resultados de inmunohistoquímica relataron tinción difusa de CD20 en biopsia de médula ósea. La paciente logró recuperarse luego de un trasplante autólogo de células progenitoras hematopoyéticas. Conclusión: Los resultados resaltan la importancia de diagnosticar y monitorear casos únicos que permitan un tratamiento oportuno del paciente.


Introduction: Multiple Myeloma with expression of surface immunoglobulin M is a rare entity, whose cause is unknown, and is characterized by a high rate of genetic abnormalities in plasma cells or their precursors. Objective: To determining the clinical characteristics and their associations with the immunophenotypic expression of surface immunoglobulin M and CD20 immunohistochemistry in a patient affected by Multiple Myeloma preceded by Myelodysplastic syndrome. Case presentation: A 68-year-old female patient is admitted to the Clinical Hematology Service. At the time of diagnosis, she presented pallor, thrombocytopenia, hypercalcemia, and bone lesions. Initially, flow cytometry detected aberrant patterns for neutrophilic granulocytes, monocytes, and the erythroid series suggestive of myelodysplastic syndrome. Subsequently, an 18% increase in plasma cells was observed in the bone marrow smear, exhibiting a lymphocyte-like morphology. A pathological population of 6% of the total cellularity was reported, showing positivity for CD38, CD117 and surface immunoglobulin M, negativity for CD19 and CD45, a phenotype consistent with abnormal plasma cells. Additionally, immunohistochemical results reported diffuse CD20 staining in bone marrow biopsy. The patient managed to recover after an autologous hematopoietic stem cell transplant. Conclusion: The results found highlight the importance of diagnosing and monitoring single cases that allow timely treatment of the patient.


Subject(s)
Female , Aged
2.
Article in Spanish | LILACS-Express | LILACS | ID: biblio-1398366

ABSTRACT

Objetivo: CConocer el tiempo de diferimiento y recaída posterior a quimioterapia de inducción en niños con leucemia linfoblástica aguda (LLA) en un hospital nacional de Lambayeque. Estudio: Estudio observacional analítico, cohorte retrospectiva. Se revisaron las historias clínicas de pacientes de 2 y 15 años con diagnóstico de LLA que alcanzaron remisión completa al término de la inducción atendidos en un hospital nacional de Lambayeque. Hallazgos: Los pacientes presentaron una mediana de edad de 5 años. Aunque la mayoría respondió al término de la inducción IA; 43/75 niños con LLA recayeron. Los niños con recaída tuvieron un diferimiento de 6 días [RIC: 0-25] entre fin de la inducción y el inicio de la fase de consolidación. Conclusión: el diferimiento ≥ 7 días en los esquemas de quimioterapia afecta a la sostenibilidad de la remisión.


Objetive:To know the delay and relapse time after induction chemotherapy in children with acute lymphoblastic leukemia (ALL) in a national hospital in Lambayeque. Analytical observational study of a retrospective The study:cohort. The medical records of patients whose age is 2 and 15 years with diagnosis of ALLwho achieved complete remission at the end of induction treated and a national hospital in Lambayeque ,were reviewed. The Findings:patients studied had a median age of 5 years. Although the majority responded at the end of IAinduction, still 43/75 children with ALLrelapsed. Children with relapse had a delay of 6 days [IQR: 0-25] between the end of induction and the beginningoftheconsolidationphase.Delay≥7daysin Conclusion:chemotherapy regimens affects the sustainability of remission

3.
Ginecol. obstet. Méx ; 90(4): 371-377, ene. 2022. tab
Article in Spanish | LILACS-Express | LILACS | ID: biblio-1385035

ABSTRACT

Resumen INTRODUCCIÓN: Los síndromes paraneoplásicos son manifestaciones a distancia de las neoplasias, que se originan por mecanismos secundarios pero no por invasión tumoral. Son poco frecuentes, anteceden a la manifestación propia del tumor y desaparecen con su curación. Si bien la miastenia gravis tradicionalmente se ha relacionado con timomas, aquí se busca reportar un caso de miastenia gravis como síndrome paraneoplásico de un tumor de ovario y hacer una revisión de la bibliografía disponible referente a su diagnóstico. CASO CLÍNICO: Paciente de 46 años, con múltiples episodios de debilidad generalizada e insuficiencia ventilatoria que requirió ventilación mecánica y estancia en cuidados intensivos. Se estableció el diagnóstico clínico de miastenia gravis. A pesar del adecuado tratamiento y de la timectomía, las crisis persistieron. Al poco tiempo se le diagnosticó un adenocarcinoma seroso de ovario que se trató con cirugía y quimioterapia. Con esto desaparecieron los síntomas neurológicos, con una remisión total después de cuatro años de seguimiento, sin tratamiento médico. Para la revisión bibliográfica se emprendió una búsqueda en Medline, Cochrane, LILACS, Google Scholar y literatura gris con los términos "myasthenia gravis AND ovarian cancer". Se encontraron 18 artículos de los que se incluyeron solo dos publicaciones para la revisión completa. CONCLUSIONES: Los síndromes neurológicos, entre estos la miastenia gravis, asociados con tumores de ovario a modo de síndromes paraneoplásicos son poco frecuentes y plantean la necesidad de incluir el estudio ginecológico en pacientes con miastenia gravis de manifestación atípica.


Abstract BACKGROUND: Paraneoplastic syndromes are distant manifestations of neoplasms originated by secondary mechanisms but not by tumor invasion. They are infrequent, precede the manifestation of the tumor itself and disappear when the tumor is cured. Although myasthenia gravis has traditionally been related to thymomas, here we report a case of myasthenia gravis as a paraneoplastic syndrome of an ovarian tumor and review the available literature on its diagnosis. CLINICAL CASE: 46-year-old patient with multiple episodes of generalized weakness and ventilatory failure requiring mechanical ventilation and intensive care stay. The clinical diagnosis of myasthenia gravis was established. Despite adequate treatment and thymectomy, the crises persisted. Soon after, she was diagnosed with serous adenocarcinoma of the ovary, which was treated with surgery and chemotherapy. With this, the neurological symptoms disappeared, with total remission after four years of follow-up, without medical treatment. For the literature review a search was undertaken in Medline, Cochrane, LILACS, Google Scholar and grey literature with the terms "myasthenia gravis AND ovarian cancer". Eighteen articles were found of which only two publications were included for the full review. CONCLUSIONS: Neurological syndromes, among this myasthenia gravis, associated with ovarian tumors as paraneoplastic syndromes are rare and raise the need to include gynecological study in patients with myasthenia gravis of atypical manifestation.

4.
Rev. cuba. med. mil ; 50(4)dic. 2021.
Article in Spanish | LILACS-Express | LILACS | ID: biblio-1408748

ABSTRACT

RESUMEN Introducción: El cáncer de cabeza y cuello es un problema de salud a nivel global. La cirugía oncológica desempeña importantes funciones en la terapéutica del cáncer y las complicaciones son en mayor o menor medida inherentes a ella. Los niveles de albúmina pretratamiento han demostrado tener valor pronóstico en pacientes oncológicos, pero se desconoce la relación entre la hipoalbuminemia y las complicaciones posquirúrgicas en pacientes con cáncer de cabeza y cuello. Objetivo: Evaluar la relación entre complicaciones posoperatorias e hipoalbuminemia en pacientes con cáncer de cabeza y cuello. Métodos: Se realizó un estudio transversal, con una muestra de 133 casos, se utilizaron las variables: edad, sexo, hipoalbuminemia, complicaciones y tipo de complicaciones. Se utilizó el test exacto de Fisher y su significación exacta, con un nivel de confianza del 95 %. Para el análisis pronóstico de la relación entre las complicaciones y la hipoalbuminemia se calculó el riesgo absoluto con el odds ratio. Resultados: El 54,8 % correspondió al grupo con más de 60 años, el 75,9 % al sexo masculino, el 20,3 % de los casos tenía hipoalbuminemia y solo presentaron complicaciones el 19,5 %. El riesgo absoluto de complicaciones en los pacientes con hipoalbuminemia fue 1312,5. Conclusiones: La hipoalbuminemia es un factor de mal pronóstico para la aparición de complicaciones postoperatorias en pacientes con cáncer de cabeza y cuello.


ABSTRACT Introduction: Head and neck cancer is a global health problem. Cancer surgery plays important roles in cancer therapy and complications are, to a greater or lesser extent, inherent to it. Pretreatment albumin levels have been shown to have prognostic value in cancer patients; but the relationship between hypoalbuminemia and postoperative complications in patients with head and neck cancer is unknown. Objective: To evaluate the relationship between postoperative complications and hypoalbuminemia in patients with head and neck cancer. Method: A cross-sectional study was carried out, with a sample of 133 cases, the variables were used: age, sex, hypoalbuminemia, complications and type of complications. Fisher's exact test and its exact significance were used, with a confidence level of 95 %. For the prognostic analysis of the relationship between complications and hypoalbuminemia, the absolute risk was calculated with the odds ratio. Results: 54,8 % corresponded to the group over 60 years old, 75,9 % to the male sex, 20,3 % of the cases had hypoalbuminemia and only 19,5 % presented complications. The absolute risk of complications in patients with hypoalbuminemia was 1312,5. Conclusions: Hypoalbuminemia is a poor prognostic factor for the appearance of postoperative complications in patients with head and neck cancer.

5.
Dement. neuropsychol ; 11(2): 129-136, Apr.-June 2017. tab, graf
Article in English | LILACS | ID: biblio-891004

ABSTRACT

ABSTRACT. The Neuropsychiatric Inventory Questionnaire (NPI-Q) is an informant-based instrument that measures the presence and severity of 12 Neuropsychiatric Symptoms (NPS) in patients with dementia, as well as informant distress. Objective: To measure the psychometric properties of the NPI-Q and the prevalence of NPS in patients with Alzheimer's disease (AD) in Chile. Methods: 53 patients with AD were assessed. Subjects were divided into two different groups: mild AD (n=26) and moderate AD (n=27). Convergent validity was estimated by correlating the outcomes of the NPI-Q with Neuropsychiatric Inventory (NPI) scores and with a global cognitive efficiency test (Addenbrooke's Cognitive Examination - Revised - ACE-R). Reliability of the NPI-Q was analysed by calculating its internal consistency. Prevalence of NPS was estimated with both the NPI and NPI-Q. Results: Positive and significant correlations were observed between the NPI-Q, the NPI, and the ACE-R (r=0.730; p<0.01 and 0.315; p<0.05 respectively). The instrument displayed an adequate level of reliability (Cronbach's alpha=0.783). The most prevalent NPS were apathy/indifference (62.3%) and dysphoria/depression (58.5%). Conclusion: The NPI-Q exhibited acceptable validity and reliability indicators for patients with AD in Chile, indicating that it is a suitable instrument for the routine assessment of NPS in clinical practice.


RESUMO. O Questionário de Inventário Neuropsiquiátrico (NPI-Q) é um instrumento baseado em informantes que mede a presença e a gravidade de 12 Sintomas Neuropsiquiátricos (NPS) em pacientes com demência, bem como o sofrimento do informante. Objetivo: Avaliar as propriedades psicométricas do NPI-Q e a prevalência de NPS em pacientes com doença de Alzheimer (DA). Métodos: Foram avaliados 53 pacientes com DA. Eles foram divididos em dois grupos diferentes: AD leve (n=26) e AD moderado (n=27). A validade convergente foi estimada correlacionando os resultados do NPI-Q com os escores do Inventário Neuropsiquiátrico (NPI) e um teste de eficiência cognitiva global (Addenbrooke's Cognitive Examination - Revised - ACE-R). A confiabilidade do NPI-Q foi analisada pelo cálculo da sua consistência interna. A prevalência de NPS foi estimada com NPI e NPI-Q. Resultados: Foram observadas correlações positivas e significativas entre NPI-Q, NPI e ACE-R (r=0,730; p<0,01 e 0>315; p<0>05). O instrumento apresentou um nível adequado de confiabilidade (alfa de Cronbach=0J83). Os NPS mais prevalentes foram apatia/indiferença (62,3%) e disforia/depressão (58,5%). Conclusão: O NPI-Q apresenta indicadores de validade e confiabilidade aceitáveis em pacientes com DA, o que indica que é um instrumento adequado para a avaliação rotineira de NPS na prática clínica.


Subject(s)
Humans , Prevalence , Neurobehavioral Manifestations , Dementia , Alzheimer Disease , Mental Status and Dementia Tests
6.
Rev. cuba. cir ; 54(3): 0-0, jul.-set. 2015. ilus
Article in Spanish | LILACS | ID: lil-765754

ABSTRACT

Los tumores de cuerpo carotideo (paragangliomas) son neoplasias altamente vascularizadas, muy poco frecuentes y generalmente benignas, originadas en los quimiorreceptores del cuerpo carotideo. Se presenta el caso de un paciente de 54 años, con aumento de volumen cervical derecho, asintomático, con estudio preoperatorio y angiografía realizados por tomografía axial computarizada, que resultan compatibles con tumor de cuerpo carotideo. Se realiza disección subadventicial, informando la biopsia paraganglioma. El tumor fue completamente resecado, sin evidencia de recurrencia y sin complicaciones(AU)


Carotid body tumors (paragangliomas) are highly vascularized, infrequent and generally benign neoplasms that emerge in the carotid body chemoreceptors. This is a male patient aged 54 years with increased right cervical volume, preoperative study and angiography by computerized tomography; the result was carotid body tumor. Subadventitial dissection was made for biopsy which yielded the diagnosis of paraganglioma. The tumor was completely excised, with no evidence of recurrence or complication(AU)


Subject(s)
Humans , Male , Middle Aged , Carotid Body Tumor/surgery , Head and Neck Neoplasms/diagnosis , Tomography, X-Ray Computed/statistics & numerical data
7.
Dement. neuropsychol ; 7(1): 40-47, jan.-mar. 2013. ilus
Article in English | LILACS | ID: lil-670733

ABSTRACT

OBJECTIVE: This study sought to analyze the psychometric properties and diagnostic accuracy of the Chilean version of the INECO Frontal Screening (IFS-Ch) in a sample of dementia patients and control subjects.METHODS: After adapting the instrument to the Chilean context and obtaining content validity evidence through expert consultation, the IFS-Ch was administered to 31 dementia patients and 30 control subjects together with other executive assessments (Frontal Assessment Battery [FAB], Modified version of the Wisconsin Card Sorting Test [MCST], phonemic verbal fluencies [letters A and P] and semantic verbal fluency [animals]) and global cognitive efficiency tests (Mini mental State Examination [MMSE] and Addenbrooke's Cognitive Examination-Revised [ACE-R]). Caregivers of dementia patients and proxies of control subjects were interviewed with instruments measuring dysexecutive symptoms (Dysexecutive Questionnaire [DEX]), dementia severity (Clinical Dementia Rating Scale [CDR]) and functional status in activities of daily living (Activities of Daily Living Scale [IADL] and Technology-Activities of Daily Living Questionnaire [T-ADLQ]). Convergent and discriminant validity, internal consistency reliability, cut-off points, sensitivity and specificity for the IFS-Ch were estimated. RESULTS: Evidence of content validity was obtained. Evidence of convergent validity was also found showing significant correlations (p<0.05) between the IFS-Ch and the other instruments measuring: executive functions (FAB, r=0.935; categories achieved in the MCST, r=0.791; perseverative errors in the MCST, r= -0.617; animal verbal fluency, r=0.728; "A" verbal fluency, r=0.681; and "P" verbal fluency, r=0.783), dysexecutive symptoms in daily living (DEX, r= -0.494), dementia severity (CDR, r= -0.75) and functional status in activities of daily living (T-ADLQ, r= -0.745; IADL, r=0.717). Regarding reliability, a Cronbach's alpha coefficient of 0.905 was obtained. For diagnostic accuracy, a cut-off point of 18 points (sensitivity=0.903; specificity=0.867) and an area under curve of 0.951 were estimated to distinguish between patients with dementia and control subjects. DISCUSSION: The IFS-Ch showed acceptable psychometric properties, supported by evidence of validity and reliability for its use in the measurement of executive functions in patients with dementia. The diagnostic accuracy of the IFS-Ch for detecting dementia patients was also considered acceptable.


OBJETIVO: Analisar as propriedades psicométricas e utilitário de diagnóstico da versão chilena do rastreio frontal INECO (IFS-Ch) em uma amostra de pacientes com demência e controles. MÉTODOS: Após a adaptação do instrumento para o contexto chileno e obtenção de evidências de validade de conteúdo, o IFS-Ch foi administrado a 31 pacientes com demência e 30 indivíduos do grupo controle, além de outros testes de eficiência cognitiva global e executiva. Cuidadores de pacientes com demência e informantes de indivíduos controles foram entrevistados com instrumentos de medidas de sintomas disexecutivos, gravidade da demência e estado funcional nas atividades da vida diária. Validade convergente e discriminante, consistência interna, pontos de corte, sensibilidade e especificidade para o IFS-Ch foram estimados.RESULTADOS: A evidência de validade de conteúdo foi obtida através de consulta a um especialista. Evidências de validade convergente foram encontrados, bem como, descritas correlações significativas entre o IFS-Ch e outros instrumentos de medidas: de funções executivas (FAB, r=0,935; categorias alcançadas no MCST, r=0,791; erros perseverativos na MCST, r= -0,617; fluência verbal animais, r=0,728; "A" de fluência verbal, r=0,681; gravidade de demência e fluência verbal de "P", r=0,783), sintomas disexecutivos na vida diária (DEX, r= -0,494), (CDR, r= -0,75) e estado funcional nas atividades da vida diária (T-ADLQ, r= -0,745; AIVD, r=0,717). Quanto à confiabilidade, coeficiente alfa de Cronbach de 0,905 foi obtido. Quanto a utilidade de diagnóstico, um ponto de corte de 18 pontos (sensibilidade=0,903, especificidade=0,867) e uma área sob a curva de 0,951 foi estimada para distinguir entre pacientes com demência e sujeitos controles. DISCUSSÃO: O IFS-Ch mostra propriedades psicométricas aceitáveis, apoiadas por evidências de validade e confiabilidade para sua utilização como medida de funções executivas em pacientes com demência. Sua utilidade diagnóstica para detectar pacientes com demência também é considerada aceitável.


Subject(s)
Humans , Dementia , Executive Function , Neuropsychological Tests
8.
Rev. méd. Chile ; 140(8): 1006-1013, ago. 2012. ilus
Article in Spanish | LILACS | ID: lil-660052

ABSTRACT

Background: The Addenbrooke's Cognitive Examination - Revised (ACE-R) is a good alternative to the Mini Mental State Examination (MMSE) for assessing cognitive capacities in dementia. Aim: To estimate the psychometric properties and diagnostic utility of the Addenbrooke's Cognitive Examination-Revised (ACE-R) in a Chilean elderly sample. Material and Methods: ACE-R was adapted for the Chilean population (ACE-R-Ch) and then administered to 60 dementia patients, 22 mild cognitive impairment (MCI) patients and 45 control subjects in addition to the MMSE for assessing global cognitive efficiency. Caregivers of dementia patients and collateral sources of MCI patients and elderly subjects without dementia were interviewed with measures of dementia severity, functional status in activities of daily living and cognitive changes. Convergent validity, internal consistency reliability, cutoff points, sensitivity and specificity for ACE-R-Ch were estimated. Results: Regarding convergent validity, the ACE-R-Ch showed significant correlations (p < 0,001) with another cognitive measure (r = 0,952 with MMSE), a rating for dementia severity (Spearman rho=-0,822 with CDR), functional capacity assessments (r = -0,70 with ADLQ-Ch; r = -0,725 with PFAQ-Ch; and r = 0,650 with IADL Scale) and a measure of cognitive changes (r = -0,633 with AD8-Ch). In terms of reliability, the test had a Cronbach alpha coefficient of 0.918. The best cut-off point to distinguish cases of dementia from control subjects was a score of 76, which reached a sensitivity of 0.92 and a specificity of 0.93. Conclusions: The ACE-R-Ch showed acceptable psychometric properties, becoming a valid and reliable instrument to assess global cognitive efficiency or cognitive impairment. Its diagnostic utility to detect dementia patients also worked very well in a Chilean elderly sample.


Subject(s)
Aged , Aged, 80 and over , Female , Humans , Male , Cognition Disorders/diagnosis , Dementia/diagnosis , Neuropsychological Tests , Educational Status , Language , Psychometrics , ROC Curve , Reproducibility of Results
9.
Rev. méd. Chile ; 140(3): 379-385, mar. 2012.
Article in Spanish | LILACS | ID: lil-627654

ABSTRACT

Attention Deficit/Hyperactivity Disorder (ADHD) is a clinical syndrome characterized by an onset in early life. More than 65% of patients persist with manifestations of ADHD in adulthood. These symptoms may interfere in activities of daily-living, interpersonal relationships and professional and academic achievement. Nevertheless, the observation of an important group of adults with ADHD who do not show significant difficulties in the areas mentioned before puts into evidence the prognostic heterogeneity of this disorder. One of the current, most accepted explanations is the Double-Pathway Model: two double-dissociated deficits (Executive Disorders and Delayed-Reward Processing impairments) are involved in the genesis of ADHD, which explains the existence of different behavioral phenotypes. Moreover, personality traits like tenacity or perseverance are associated with higher levels of achievement in adults. On these grounds, we propose the hypothesis that the neurobiological correlate of tenacity/perseverance is a preserved Delayed-Reward Processing capacity, although further studies are needed to verify this idea.


Subject(s)
Adult , Humans , Achievement , Attention Deficit Disorder with Hyperactivity/physiopathology , Cognition Disorders/physiopathology , Executive Function/physiology , Prognosis
11.
Rev. cuba. estomatol ; 47(3): 336-340, jul.-sep. 2010.
Article in Spanish | LILACS, CUMED | ID: lil-584511

ABSTRACT

Los linfomas tipo MALT (tejido linfoideo asociado a mucosa), constituyen la variedad más recientemente descubierta de los linfomas no Hodgkin, tienen lugar fundamentalmente en la mucosa gástrica asociados a infección por Helycobacter pylori, y en la glándula tiroides en relación con la tiroiditis de Hashimoto. Sin embargo, internacionalmente se han descrito casos en glándulas salivales asociados a linfoadenitis. La naturaleza de la lesión a menudo no puede ser determinada solo por el estudio citológico; se hace necesario el análisis histopatológico para el diagnóstico definitivo en la mayoría de los casos. El presente estudio muestra un paciente masculino con aumento de volumen bilateral de ambas glándulas parótidas y diagnóstico citohistopatológico de un proceso linfoepitelial benigno, el cual desarrolló un linfoma tipo MALT en relación con la glándula parótida derecha(AU)


The lymphomas type MALT or the mucosa-associated lymphoid tissue, are the most recent variety of non-Hodgkin lymphomas present mainly in the gastric mucosa associated with Helycobacter pylori infection and in the thyroid gland in relation to Hashimoto's thyroiditis. Frequently the origin of this lesion can't be determined only by cytology study, thus it is necessary the histopathology analysis for a definitive diagnosis in most cases. Present paper includes the case of male patient with bilateral volume increase of both parotid glands and a diagnosis cytopathological of a benign lymphoepithelial process and the development of a type MALT lymphoma in relation to the right parotid gland(AU)


Subject(s)
Humans , Male , Middle Aged , Parotid Diseases/surgery , Salivary Gland Neoplasms/drug therapy , Lymphoma, B-Cell, Marginal Zone/diagnosis
12.
Rev. cuba. estomatol ; 47(2): 189-198, abr.-jun. 2010.
Article in Spanish | LILACS, CUMED | ID: lil-584496

ABSTRACT

La maxilectomía es una de las intervenciones quirúrgicas indicada para el tratamiento de las neoplasias de la región facial. Esta técnica comprende la resección del maxilar y de algunas estructuras anatómicas adyacentes. Se encuentran una gran variedad de términos para definir tipos y subtipos de maxilectomía que conllevan a mucha confusión. Al no existir una herramienta única y normada internacionalmente, aún hoy presupone un reto el procedimiento de clasificación y tratamiento. En las clasificaciones actuales de la maxilectomía se encuentran autores que defienden tratamientos muy radicales y otros los tratamientos conservadores o parciales. El objetivo del trabajo es presentar el sistema de clasificación para la maxilectomía utilizado en el Instituto Nacional de Oncología y Radiobiología (INOR). Se realizó una actualización del tema y se presenta la propuesta de clasificación para la maxilectomía. Se concluyó que siempre que la resección del tumor sea completa y se logre un buen margen de seguridad, se puede plantear que no existe diferencia en los resultados entre el tipo de maxilectomía realizada y el intervalo libre de enfermedad y que sin una norma internacional, la decisión terapéutica se apoya más en las convicciones y resultados personales de los grupos de investigadores, que en un consenso global(AU)


The maxillectomy is one of the surgical interventions prescribed for the neoplasms treatment of facial area. This technique involves the resection of maxilla and of some adjacent anatomical structures. There are many terms defining the types and subtypes of maxillectomy creating confusion. Since there is not only tool and worldwide standardized, nowadays the classification and treatment procedure is still a challenge. In current classification systems of maxillectomy there are authors advocating very radical treatments and other favoring the conservative or partial treatments. The aim of present paper is to present a classification system for Maxillectomy used in the National Institute of Oncology and Radiobiology (NIOR). We concluded that provided that tumor resection be complete and with a good safety margin, it is possible to propose that there is not difference in results between the type of maxillectomy performed and the disease-free interval and that without an international standard, the therapeutical decision rely more in personal convictions and results achieved by the researcher groups than in a global consensus(AU)


Subject(s)
Humans , Facial Neoplasms/surgery , Jaw Neoplasms/surgery , Jaw Neoplasms/classification , Review Literature as Topic
13.
An. Fac. Med. (Perú) ; 62(3): 235-246, jul. 2001. tab
Article in Spanish | LILACS, LIPECS | ID: lil-357086

ABSTRACT

Se propone once recomendaciones para ayudar a nuestros alumnos a tener éxito en sus estudios y se hace el análisis de sus implicaciones -en sus interacciones y resultados- en el resultado de la tarea andragógica. El propósito del artículo es sugerir el poner en práctica cada una de estas recomendaciones en la docencia universitaria, ofreciéndose sugerencias para su operacionalización en la práctica andragógica cotidiana, que permitan a nuestros alumnos descubrir la alegría y el amor al conocimiento.


Subject(s)
Humans , Learning , Universities , Teaching
14.
An. Fac. Med. (Perú) ; 59(2): 145-54, 1998. tab
Article in Spanish | LILACS | ID: lil-227821

ABSTRACT

Este artículo expone, en primer lugar, la importancia del Laboratorio de Procedimientos Histológicos del Departamento de Patología (DP) en la práctica médica; a continuación se hace una revisión del concepto de calidad y su relación con las diferentes actividades dentro de dicho laboratorio. Además, se dan algunos ejemplos de criterios erróneos sobre la calidad concebidos por muchos de nosotros. También se ponen de manifiesto las complejidades de obtener un preparado histológico de calidad. Finalmente, se proponen algunos criterio para ayudar a los miembros del equipo del Laboratorio de Procedimientos Hitológicos del DP a entender los diferentes aspectos de la calidad que se logran con los métodos que realizan, y proporcionarles algunos consejos adecuados sobre control de calidad y los tratamientos que se necesitan.


Subject(s)
Histology , Laboratories, Hospital , Quality Control
15.
An. Fac. Med. (Perú) ; 58(3): 182-8, 1997.
Article in Spanish | LILACS | ID: lil-208420

ABSTRACT

Este trabajo la identificación de células de Langerhans en secciones de epitelio de córnea humana, fijadas en líquido de Zenker e incluidad en parafina, empleando el método inmunohistoquímico de streptavidinabiotina peroxidasa, para demostrar en ellas la presencia de proteína S-100 y muramidasa (lisozima). Las células de Langerhans se distinguieron fácilmente del resto de células epiteliales pues fueron los únicos elementos proteína S-100+ y muramidasa+, las cuales se tiñieron de color marrón claro y mostraron un contorno redondeado, con una o dos prolongaciones. Su población en la zona límbica es numerosa y es nula en la región central.


Subject(s)
Langerhans Cells/immunology , Langerhans Cells/chemistry , Cornea/immunology , In Vitro Techniques , Immunohistochemistry/methods , Immunohistochemistry/trends , Peroxidase
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