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A case of solitary neurofibroma of the common bile duct is presented. A review of the world literature reveals only one previously reported case of solitary neurofibroma in this location. Rare case reports of neurofibroma in association with von Recklinghausen's disease (neurofibromatosis 1)...
Osteogenic melanoma may mimic many other tumors, especially osteogenic sarcoma; only 12 cases have been reported so far. To characterize this unusual neoplasm further, we present the clinicopathologic findings of a new case. A 67-year-old woman was treated unsuccessfully for “fungal...
We examined proliferation markers Ki-67 and proliferating cell nuclear antigen (PCNA) to determine whether immunohistochemical staining results could predict outcome in 22 uterine papillary serous carcinomas (UPSC). Eighteen tumors (82%) had increased proliferation as demonstrated by Ki-67...
We report a metanephric adenoma of the left kidney in a 70-year-old woman. The tumor was composed of closely packed, small tubules lined by oval tumor cells without atypia. Blastema elements were absent. Ultrastructural examination confirmed the epithelial nature of the neoplasm. Flow cytometric...
Primary sarcomas of the salivary gland region occur rarely and may be confused with other primary salivary gland neoplasms. This distinction is critical, as the treatment of salivary gland sarcomas differs significantly from the therapy of the more common tumors typically found in these glands....
Cervical carcinoma ranks among the most common tumors worldwide and is especially prevalent in the developing world. Strong evidence supports the role of human papillomavirus (HPV) infection in the genesis of these tumors. The authors examined 65 cervical neoplasias from a population of women at...
Oncogene activation by amplification and/or overexpression has been implicated in the development and progression of a number of malignancies. To better define the role of oncogene activation in adenocarcinomas arising in the setting of Barrett esophagus, we examined 44 resected Barrett...
The authors report a retroperitoneal lesion showing the hitherto undescribed coexistence of hyaline-vascular Castleman's disease and Kikuchi's lymphadenitis-like changes, the only feature in common for these two disease processes being the consistent presence of plasmacytoid monocytes...
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