Marcelo Arguelles

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The light and electron microscopic as well as the histochemical characteristics of a papillary cystadenofibroma of the endometrium are described. The neoplasm arose in the lower uterine segment and was composed of a florid fibroblastic growth arranged in club-shaped papillae projecting into clefts and cystic spaces. The epithelium lining the plicae,(More)
A marine bacterial strain, designated strain JUB59(T), was isolated from surface seawater in Antarctica and subsequently characterized. Cells were found to be Gram-negative, non-motile rods forming butyrous, shiny, yellowish orange colonies on marine agar. Growth occurred at 2-28 degrees C (optimally at 22-25 degrees C) but not at 30 degrees C; Na+ ions(More)
BACKGROUND Aberrant global DNA methylation is shown to increase cancer risk. LINE-1 has been proven a measure of global DNA methylation. The objectives of this study were to assess the association between LINE-1 methylation level and bladder cancer risk and to evaluate effect modification by environmental and genetic factors. METHODS Bisulphite-treated(More)
Pure rhabdomyosarcomas are extremely rare and lethal primary neoplasms of the ovary. The available literature revealed 14 such cases. This report describes the light and electron microscopic findings of another case. At the electron microscopic level, rhabdomyogenesis recapitulates skeletal muscle differentiation during early fetal life. Rhabdomyoblasts in(More)
The clinical and light and electron microscopic findings of a moderately differentiated, virilizing, Sertoli-Leydig cell tumor (SLT) with pleomorphic rhabdomyosarcoma of the ovary are presented. The tumor recapitulates the primitive embryonal testis and rhabdomyogenesis, respectively. The natural history, including pathogenesis, of this peculiar and rare(More)
PURPOSE To evaluate the features of bone marrow (BM) biopsy involvement by lymphoma, pattern of infiltration, morphological analysis and flow cytometry were reviewed at all lymphoma patients over a period of 10 years. METHODS/PATIENTS 413 cases were included in the study if BM biopsy slides were available. Only 356 patients had both BM trephine biopsy and(More)
We present the cytopathologic features of lymphomatoid granulomatosis in a case affecting the subcutaneous tissue. Atypical lymphocytes mixed with histiocytes and well-formed granulomas were the main findings. Fine needle aspiration biopsy can be a useful method of diagnosing subcutaneous relapses in lymphomatoid granulomatosis. To our knowledge, this is(More)
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