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1.
Autops. Case Rep ; 9(4): e2019117, Oct.-Dec. 2019. ilus
Article in English | LILACS | ID: biblio-1024240

ABSTRACT

Sporadic Burkitt lymphoma (SBL) is a variant of Burkitt lymphoma that occurs worldwide, affecting mainly children and young adults. Association with Epstein-Barr virus (EBV) can be identified in approximately 20-30% of cases. Herein we described a case of a 63-year-old male presenting intraoral bilateral mandibular swelling, subjacent to fixed dental prosthesis, with one month of duration. Incisional biopsies were performed, and after two days, the patient was hospitalized due to malaise and breathing difficulty, and died after a week when an abdominal tumor was detected. The mandibular biopsies revealed a diffuse proliferation of medium-sized monomorphic atypical lymphoid cells exhibiting numerous mitoses and areas of "starry-sky" pattern. The tumor showed immunohistochemical positivity for CD20, CD10, Bcl-6, and Ki-67 (≈ 100%); it was negative for CD3, Bcl-2, Vs38c, and MUM-1. Positivity for EBV was found by in situ hybridization. The final diagnosis was intraoral SBL positive for EBV. Clinical, morphological and molecular criteria are necessary for the correct diagnosis of aggressive B-cell neoplasms positive for EBV in elderly patients.


Subject(s)
Humans , Male , Middle Aged , Mouth Neoplasms/pathology , Burkitt Lymphoma/pathology , Herpesvirus 4, Human , Lymphoma, Non-Hodgkin/pathology
2.
Colomb. med ; 47(2): 81-86, Apr.June 2016.
Article in English | LILACS | ID: lil-791143

ABSTRACT

Introduction: monoclonal B-cell lymphocytosis is a symptom free condition characterized by the circulation of small clonal population of B lymphocytes in peripheral blood (less than 5x10(9)/L) expressing an immunophenotype similar to chronic lymphocytic leukemia. Different studies based on big hospital series have manifested a higher risk in subjects with monoclonal B-cell lymphocytosis to progress to a chronic lymphocytic leukemia. The behavior of this hematologic entity is unknown therefore its frequency in sporadic chronic lymphocytic leukemia patient relatives was determined. Methods: transversal descriptive study, 8 color flow cytometry was performed using two of the tubes of the Euro Flow recommended panel, with modifications, for the diagnose of chronic lymphoproliferative disorders of B lymphocytes; besides, a fluorescence in situ hybridization was performed. univariate and bivariate analyses of the information were performed. Results: monoclonal B-cell lymphocytosis frequency found in 51 analyzed relatives was 2%, it was a female participant, 59 years old, with a total leukocyte count of 7.7x109/L and a B lymphocyte count of 0.124x10(9)/L; from these, 0.04x10(9)/L were clonal cells with restrictions of the kappa light chain. Rearrangements of the IGH gene (14q32) were found. Conclusion: monoclonal B-cell lymphocytosis was detected in one relative of a patient with sporadic chronic lymphocytic leukemia in a frequency similar to the one reported in general population.


Introducción: La linfocitosis monoclonal de células B es una condición asintomática que se caracteriza por la circulación de pequeñas poblaciones clonales de linfocitos B en sangre periférica (menos de 5x10(9)/L) que expresan un inmunofenotipo similar al de la leucemia linfoide cónica. Diferentes estudios basados en grandes series hospitalarias, han puesto de manifiesto un riesgo más elevado de los sujetos con linfocitosis monoclonal de células B de progresar a una leucemia linfoide crónica. En Colombia se desconoce el comportamiento de esta entidad hematológica, por tal razón se determinó su frecuencia en familiares de pacientes con leucemia linfoide crónica esporádica. Métodos: Estudio descriptivo transversal, se realizó citometría de flujo de 8 colores utilizando dos de los tubos del panel recomendado por Euro Flow para el diagnóstico de enfermedades linfoproliferativas crónicas de linfocitos B con modificaciones, además se hizo hibridación fluorescente in situ. Se realizó análisis univariado y bivariado. Resultados: La frecuencia de linfocitosis monoclonal de células B encontrada en los 51 familiares analizados fue del 2%, se trató de un participante del sexo femenino y 59 años de edad, con un recuento total de leucocitos de 7,7x10(9)/L y un recuento de linfocitos B de 0,124x109/L; de estos 0,04x10(9)/L eran células clonales con restricción de la cadena ligera kappa. Se encontraron reordenamientos del gen IGH (14q32). Conclusión: Se detectó linfocitosis monoclonal de células B en un familiar de paciente con leucemia linfoide cónica esporádica en una frecuencia similar a la informada en la población general.


Subject(s)
Adult , Aged , Female , Humans , Male , Middle Aged , B-Lymphocytes/pathology , Leukemia, Lymphocytic, Chronic, B-Cell/pathology , Family Health , Lymphocytosis/pathology , Leukemia, Lymphocytic, Chronic, B-Cell/genetics , Cross-Sectional Studies , In Situ Hybridization, Fluorescence , Flow Cytometry , Lymphocytosis/genetics
3.
Med. lab ; 2014, 20(5-6): 253-262, 2014. tab, ilus
Article in Spanish | LILACS | ID: biblio-834818

ABSTRACT

Las recomendaciones para la biopsia por aspiración con aguja fina de mama se desarrollaron y aprobaron en 1997 por el Instituto Nacional de Cáncer en Bethesda, Estados Unidos y fueron adaptadas a nuestro país en 2007, sin embargo, en los últimos años no se han realizado cambios formales en estas indicaciones. El objetivo de este módulo es presentar la actualización del reporte de biopsia por aspiración con aguja fina de mama, usando el sistema de reporte Bethesda, realizado por consenso con un grupo de patólogos, clínicos, radiólogos, cirujanos de mama y otros profesionales de la salud de Colombia y otros países, y con base en la experiencia realizando biopsia por aspiración con aguja fina de mama del Hospital Pablo Tobón Uribe y de Dinámica IPS.


Recommendations for breast fine needle aspiration biopsy were developed and approved in 1997 by The National Cancer Institute of Bethesda, United States, , and were adapted to our country on 2007, however, in last years these indications have not changed in a formal manner. The purpose of this review was to provide an update of the report for breast fine needle aspiration biopsy using the Bethesda system. This guide was made by consensus with pathologists, clinicians, radiologists, breast surgeons and other health professionals of Colombia and other countries. The update was basis on the experience of Hospital Pablo Tobon Uribe and Dinamica IPS in performing breast fine needle aspiration biopsy.


Subject(s)
Humans , Biopsy, Fine-Needle , Breast Diseases
4.
Rev. colomb. gastroenterol ; 28(2): 140-148, jun. 2013. ilus, tab
Article in Spanish | LILACS | ID: lil-680527

ABSTRACT

La linfangiectasia intestinal primaria es una enfermedad caracterizada por dilatación de los vasos linfáticos del intestino, manifestándose como una enteropatía perdedora de proteínas. Presentamos un paciente con diarrea crónica, prolapso rectal recurrente y hemihipertrofia de miembro superior izquierdo, asociado a linfopenia e hipoalbuminemia. Por endoscopia digestiva superior y biopsia se diagnostica linfangiectasia intestinal primaria y se inicia tratamiento nutricional exitosamente.


Primary intestinal lymphangiectasia is a disease characterized by dilated intestinal lymph vessels which manifests as a protein losing enteropathy. We present a patient with chronic diarrhea, recurrent rectal prolapse and left upper limb hemihypertrophy associated with lymphopenia and hypoalbuminemia. Primary intestinal lymphangiectasia was diagnosed with upper endoscopy and biopsy. Nutritional treatment was successfully begun.


Subject(s)
Humans , Male , Child, Preschool , Lymphangiectasis, Intestinal , Nutrition Therapy , Protein-Losing Enteropathies
5.
Med. lab ; 18(7-8): 365-372, 2012. tab, ilus
Article in Spanish | LILACS | ID: biblio-982709

ABSTRACT

Resumen: el desorden linfoproliferativo T sistémico de la infancia asociado al virus Epstein-Barres una entidad clínica de descripción reciente, potencialmente mortal en niños y en adultos jóvenes.Se caracteriza por una proliferación clonal de linfocitos T con un fenotipo citotóxico activadoinfectados por el virus. Es más frecuente en países de Asia y México, y se desconoce su incidenciaen el medio. Se reporta un caso de esta enfermedad, con progresión indolente y desenlace fatal.


Abstract: systemic Epstein-Barr virus-positive T cell Iymphoproliferative disease of childhood is arecently described, potentially lethal clinical entity in children and young adults, characterized bya clonal proliferation of EBV-infected T-cells with an activated cytotoxic phenotype. It is typicallyprevalent in Asian countries and Mexico, and its incidence is unknown in our country. This reportdescribes a case of systemic Epstein-Barr virus positive.


Subject(s)
Humans , Epstein-Barr Virus Infections , Lymphoproliferative Disorders , T-Lymphocytes
6.
Rev. Fac. Odontol. Univ. Antioq ; 18(2): 93-98, jun. 2007. ilus
Article in Spanish | LILACS | ID: lil-483882

ABSTRACT

Los melanomas de la cavidad oral son tumores raros que corresponden al 0,5 por ciento de todas las malignidades orales. Los sitios de presentación más frecuentes son el paladar y la encía. Generalmente al momento del diagnóstico suelen estar en estadios avanzados. Describimos un caso de un hombre de 70 años que consultó por una lesión nodular pigmentada en el paladar duro, con otras máculas pigmentadas alrededor, y un nódulo cervical de 2 cm. El estudio histológico mostró una extensa infiltración tumoral por células fusiformes y epiteliodes con moderada pleomorfia celular y pigmento melánico en su citoplasma, la inmunohistoquímica reveló positividad para S-100 y HMB-45. Se realizó citología por aspiración del nódulo cervical con aguja fina, visualizándose células con citoplasma amplio con presencia de pigmento melánico y núcleos pleomórficos. El diagnóstico diferencial de esta lesión incluye tumores vasculares benignos y malignos, tumores y quistes de glándulas salivales además de lesiones pigmentarias benignas de las mucosas.


Oral melanomas are rare tumors corresponding to 0.5% of all the oral malignancies. The hard palate and gingiva are more frequently affected. At the moment of diagnosis they are generally in an advanced stage. We describe a case of a 70 years old male with nodular and pigmented lesion in hard palate and other macular pigmented lesions, besides a 2cm cervical nodule. The histo-pathological study showed an extensive infiltration by moderately pleomorphic spindle and epitheliod tumoral cells with melanin pigment in the cytoplasm. Immune-histo-chemical staining was positive to S-100 and HMB-45. Cytology by aspiration of the cervical node was carried out with a fine needle, showing cells with wide cytoplasm and presence of melanin pigment and pleomorphic nuclei. The differential diagnosis includes benign and malign vascular tumors, tumors and cysts of salivary glands, and benign pigmented lesions of the mucosa.


Subject(s)
Immunohistochemistry , Melanoma
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