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A major drawback of immunohistochemical detection of monoclonalityin B-cell lymphoproliferative disorders is the lack of contrast between surface-immunoglobulin staining and extracellular immunoglobulin staining. To bypass this drawback, immunophenotyping of single-cell suspensions by flow...
Neural cell adhesion molecules (NCAM) are adhesion moleculesexpressed by neural and neuroendocrine tumors and a few biphasic tumors such as synovialosarcomas and breast phyllode tumors. To investigate NCAM expression in mesotheliomas, we studied 26 cases of epithelioid ( n = 12), biphasic ( n =...
The theory that poorly differentiated prostate carcinoma developsa neuroendocrine (NE) phenotype is controversial. Supportive data is variable with NE expression being observed in anywhere from 5% to 83% of prostate cancers. These percentages are derived from standard immunohistochemistry...
Immunotherapy trials using monoclonal antibodies 323/A3 and 17-1A that recognize Ep-CAM, including trials focused on cancer of the lung, currently are underway. Nevertheless, there have been few comprehensive evaluations of the expression of Ep-CAM in specific types of neoplastic processes,...
Cytological diagnosis of malignant cells in effusions is hampered by difficulties in the differentiation from reactive mesothelial cells. Because interphase cytogenetics by fluorescence in situ hybridization (FISH) might complement cytological evaluation, we determined the power of tumor cell...
This cliniopathologic study of primary Mullerian tumors of thebowel arising in foci of endometriosis is based on six new cases and an analysis of 17 previously reported cases. Varieties of Mullerian tumors occur in the bowel; the most common types are endometrioid carcinoma, followed by various...
Salivary gland pleomorphic adenomas are characterized by abiphasic growth of “epithelial” and “stromal” regions. The “epithelial” region is a compactly organized mixture of both luminal and nonluminal cells, whereas the stromal region is composed predominantly of the nonluminal cells....
Angiogenesis is important for tumor growth and progress, andthe intratumor density of microvessels is a significant prognostic factor in many tumor types. The role in thyroid cancer has not been well studied, and we therefore examined a series of 128 papillary carcinomas with respect to...
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