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In 200 consecutive cholecystectomy specimens excised for cholelithiasis or cholecystitis, 83% exhibited epithelial hyperplasia, 13.5%, atypical hyperplasia and 3.5%, carcinoma in situ. Carcinoma in situ was also observed in the mucosa adjacent to invasive carcinomas in 79% of 39 evaluable surgical cases and in 52.9% of 17 autopsy cases. Our findings suggest(More)
BACKGROUND Human herpesviruses types 4 and 6 (EBV, HHV-6) are frequently found in Hodgkin 's disease (HD) and--to a certain extent--in Kikuchi-Fujimoto's disease (KFD). Both viruses are apparently related to proliferative and/or apoptotic processes as represented by HD or KFD respectively. OBJECTIVE To correlate frequency and location of antigen- and DNA(More)
In a review of 159 gallbladder carcinomas, we identified four unusual histologic types: oat-cell carcinoma (five cases), giant-cell adenocarcinoma (seven cases), intestinal-type adenocarcinoma (three cases), and adenocarcinoma with choriocarcinoma-like areas (one case). Oat-cell carcinomas were similar at light- and electron-microscopic levels to those(More)
BACKGROUND Thymolipomas are the most outstanding mesenchymal mediastinal tumors although they represent only a small percentage of thymic neoplasms. Their histogenesis remains unsolved, and they are usually benign. Fine needle aspiration biopsy (FNAB) has become the method of choice for the study of mediastinal tumors, including thymolipomas. Making the(More)
Morphologic findings in the kidneys of 138 consecutive acquired immunodeficiency syndrome (AIDS) autopsies performed at the Mexico City General Hospital between 1986 and 1991 were studied. A total of 87 cases (63%) had renal disease, 62 cases presented glomerular alterations, and 80 cases showed tubulointerstitial damage. Glomerular collapse was seen in 30(More)
BACKGROUND Bronchogenic cyst is a rare congenital malformation and commonly located in the mediastinum and lung parenchyma. OBJECTIVE To determine the clinical characteristics of the patients with diagnosis of bronchogenic cysts, their location and the infectious bacteria when the cysts are infected. The cases were collected from 1 January 2005 to 1(More)
BACKGROUND Malignant mesothelioma is a neoplasm of bad prognosis, it is linked with asbestos contact, but there are cases without this antecedent. OBJECTIVE To investigate the relationship of asbestos exposition and other factors with malignant mesothelioma. METHODS Retrospective analysis of histologic confirmed cases of malignant mesothelioma,(More)
Embolic complications in pregnancy are not common, but require prompt attention due to their high mortality, with reports of numbers up to 80% in patients with presence of amniotic fluid embolism. Of the embolic complications, deep vein thrombosis is the most frequent and 15-24% of patients could present with amniotic fluid embolism. In the case of a(More)