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1.
Acta gastroenterol. latinoam ; 27(1): 15-8, mar. 1997. tab
Article in Spanish | LILACS | ID: lil-196658

ABSTRACT

In order to have knowledge on the histopatologic characteristics of the HCV infections in our geographical area and its relation with some epidemiologic variables, a serie of 54 biopsias of Anti HCV (R) patients was analized. The histologic lesions found in this study correspond mostly to patients with relatively early infections, on the contrary to other studies of the some kind. The most frequent histopathologic diagnosis were crhonic hepatitis 38/54 (70.4 percent), steatosis 4/54 (7.4 percent) and 12/54 (22.2 percent) with no changes. The presence of lymphoid follicles in the portal tracts was the most frequent histological change in this series (66.7 percent), followed by the alteration in bile ducts (53.7 percent); they occurred in a significally higher proportion in the biopsies which had a diagnosis of chronic hepatitis (p=0.02) (p=0.000002). The presence of steatosis and acidophilic bodies in the acinus were found in nearly one third of the biopsies. This findings suggest that the hepatic damage in the anti HCV reactive patients might take through inmunologic mechanisms and citopatic direct action. It was not found that histologic changes produced by HCV might differ according to epidemiologic variables (post-tranfutional, drug abuse IV and sporadic).


Subject(s)
Adult , Middle Aged , Female , Humans , Hepatitis C/pathology , Liver/pathology , Argentina/epidemiology , Biopsy , Chi-Square Distribution , Epidemiologic Factors , Hepatitis C Antibodies/blood , Hepatitis C/epidemiology
2.
Acta gastroenterol. latinoam ; 27(1): 27-30, mar. 1997. ilus, tab, graf
Article in Spanish | LILACS | ID: lil-196660

ABSTRACT

Multiple carcinomas were searched in 50 successive gastrectomies, 17 females (34 percent) 33 males (66 percent) from 40 to 83 years old. Macroscopic handling of the specimens included pinning an a board, fresh, half-fixed and completely fixed examination, not only by naked eye but also through a magnifying glass. The stomach were totally studied, according to japanese method. A satisfactory slide was obtained from each block, stained with H.E. and examined by each of the authors. Synchronous tumors were found in 4 cases (8 percent), 3 males and one female. Compared to the main lesion, two cases showed a proximal tumor, one case showed a distal tumor, and the last one showed two tumors, one of them proximal and the other distal. Three tumors were macroscopically and two were microscopically detected. Two of them coexisted with advanced carcinoma and three with early carcinoma. Four of them were located in mucosa with intestinal metaplasia. Histologically, four cases belong to the same type of the original tumor, and one of them did not coincide. We conclude that stomachs resected for cancer must be thoroughly and methodically studied before and after fixation. We suggest that resection must include the whole mucosa with intestinal metaplasia, in order to avoid leaving a synchronous tumor in the gastric stump.


Subject(s)
Adult , Middle Aged , Female , Humans , Neoplasms, Multiple Primary/pathology , Stomach Neoplasms/surgery , Aged, 80 and over , Gastrectomy , Intestines/pathology , Metaplasia/pathology , Stomach Neoplasms/pathology
3.
Acta gastroenterol. latinoam ; 26(4): 211-4, 1996. tab
Article in Spanish | LILACS | ID: lil-197171

ABSTRACT

Se presenta un estudio prospectivo sobre 115 alcohólicos crónicos destinado a conocer la prevalencia de marcadores séricos de virus de hepatitis B y C (HBV) (HCV) en ese tipo de pacientes, la asociación de las infecciones por HBV y HCV con diversas variables epidemiológicas y la influencia de esos virus sobre el grado de lesión hepatica. Se halló una prevalencia de marcadores de HBV del 13.9 por ciento de Anti HCV del 20.0 por ciento ambas significativamente mayores a las de los donantes de sangre. La alta prevalencia de Anti HCV en esta serie de alcohólicos, con un 69.6 por ciento de formas espor dicas de infección, resulta difícil de justificar. El diagnóstico histológico de hepatitis crónica (HC) realizado en 3 de los 115 pacientes estudiados, recayó la totalidad de las veces sobre pacientes Anti HCV (R), demonstrando una clara asociación de las HC con el HCV en los alcohólicos crónicos. Con respecto a los otros diagnósticos histológicos, no se halló diferencias entre los pacientes con sueros reactivos para algún marcador del HBV o para el Anti HCV y aquellos con sueros no reactivos; sugiriendo que el HBV y el HCV no influyen en el grado de lesión hep tica de los alcohólicos crónicos. No hallamos que la relación de positividad del Anti HCV en los 23 pacientes fuera diferente según los distintos diagnósticos histopatológicos. Tampoco apreciamos en esta serie, que la cirrosis acurriera mas tempranamente en los Anti HCV R que en los NR; discrepando con algunas comunicaciones recientes.


Subject(s)
Adult , Middle Aged , Female , Humans , Adolescent , Hepacivirus , Hepatitis B virus , Hepatitis, Alcoholic/epidemiology , Liver Diseases, Alcoholic/epidemiology , Argentina/epidemiology , Biomarkers/blood , Chi-Square Distribution , Hepatitis, Alcoholic/blood , Hepatitis, Alcoholic/pathology , Liver Diseases, Alcoholic/pathology , Prevalence , Prospective Studies
4.
Acta gastroenterol. latinoam ; 24(3): 153-8, 1994. ilus, tab
Article in Spanish | LILACS | ID: lil-141772

ABSTRACT

Hasta hoy, la histogénesis del carcinoma vesicular, sigue siendo controvertida. Algunos autores, insisten en la secuencia pólipocáncer, mientras que otros, vinculan al adenocarcinoma con los cambios metaplásicos y displásicos. Tiene valor el examen macroscópico inmediato de la mucosa, para poder orientar al cirujano en el quirófano. Con el propósito de correlacionar los hallazgos macro-microscópicos de las lesiones vesiculares, se estudiaron 306 piezas de colecistectomías, extendidas y fijadas en formalina. Se consignó: Edad, sexo, litiasis, dimensiones de la pieza y el patrón macroscópico de la superficie mucosa. Se realizaron cortes longitudinales, para su estudio histológico. Doscientos treinta y siete casos correspondieron al sexo femenino (77,4 por ciento) y 69 (22,5 por ciento al masculino, con una edad promedio de 44 años. Entre los hallazgos microscópicos, se destacó. La metaplasia gástrica (43 por ciento), intestinal 10,8 por ciento), displasia de bajo grado (11,8 por ciento) y alto grado (1,6 por ciento) y 2 casos de carcinoma invasor, no sospechados clínicamente (0,6 por ciento). Podría afirmarse la asociación entre colecistitis crónica, litiasis y cambios epiteliales, pero, la relación existente entre cada uno de los patrones macroscópicos propuestos y los hallazgos histológicos, sólo es estadísticamente significativa en aquellos casos de atrofia. Probablemente esto sea debido a la superposición de los hallazgos microscópicos en los diferentes patrones macroscópicos


Subject(s)
Child , Adolescent , Adult , Middle Aged , Humans , Male , Female , Carcinoma/pathology , Gallbladder Neoplasms/etiology , Gallbladder/pathology , Aged, 80 and over , Argentina , Atrophy/diagnosis , Chi-Square Distribution , Gallbladder Diseases/diagnosis , Gallbladder Diseases/etiology , Hypertrophy/diagnosis , Metaplasia/diagnosis , Microscopy , Gallbladder Neoplasms/diagnosis
5.
Acta gastroenterol. latinoam ; 21(4): 241-7, oct.-dec. 1991. ilus
Article in Spanish | LILACS | ID: lil-105629

ABSTRACT

Se presentan tres casos de CRCTP detectados en el estudio de 51 piezas macroscópicas de resección recto colónica. Dos de ellos fueron diagnosticados endoscópicamente, pero el más pequeño no fue percibido en el estudio instrumental luminal. Del análisis bibliográfico y nuestra experiencia se deduce la importancia a asignar a las lesiones planas en le desarrollo del CRCT, ya sean derivadas de adenoma preexistente o de novo. Las variantes planas de adenoma y presumiblemente las formas a nivel o deprimidas deben ser consideradas como factores importantes en la secuencia precoz adenoma-cáncer. Un apropiado equipamiento endoscópico con utilización de técnicas adicionales de coloración (por ejemplo índigo carmin, azul de metileno) y la correcta pesquisa en maniobras de insuflación-desinsuflación colónica facilita la identificación de pequeñas lesiones, su erradicación y prvención de formas avanzadas de CRC


Subject(s)
Humans , Male , Female , Adenocarcinoma/pathology , Adenoma/pathology , Carcinoma/pathology , Colorectal Neoplasms/pathology , Aged, 80 and over , Endoscopy, Gastrointestinal , Neoplasm Staging
6.
Acta gastroenterol. latinoam ; 19(1): 21-30, jan.-mar. 1989. tab
Article in Spanish | LILACS | ID: lil-76189

ABSTRACT

Data provided by 51 voluntaru blood donnors identified as asymptomatic HBsAg carriers five to ten years (x = 7.5 years) before their inclusion in the study are analysed towards their long-term evolution. HBsAg clearance was estimated 2.5% yearly and 83.9% of those remaining positive showed the classical non-replicative serological pattern,; another 12.9% were negative for both HBeAg - Anti HBe (serovonversion window?), one of them presenting raised ASATALAT levels and enhanced histological activity (lobular chronic hepatitis). Neither alpha-fetoprotein seric levels (RIA) nor liver ultrasonography demonstrated hepato cellular carcinoma suspicion signs in 35 HBsAg positive cases to this methods; ASAT-ALAT levels raised over two fold the normal superior limit ion only 11.4%, and neither agressive chronic liver disease nor hepatocyte dissplasia was showed in 17 biopsed cases (70.6% normal; 23.6% chronic reactive or chronic persistent hepatitis; 5.8% chronic liobular hepatitis). One out of five patients biopsed with a seven years interval showed histologic worsening


Subject(s)
Humans , Hepatitis B Surface Antigens/analysis , Carcinoma, Hepatocellular/immunology , Hepatitis B virus/pathogenicity , Hepatitis B/immunology , Liver Neoplasms/immunology
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