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Polyoma virus nephritis is increasingly being recognized as a cause of allograft dysfunction in renal transplant patients. We describe and illustrate the findings in a renal biopsy and a concurrent urine sample from a patient with polyoma virus nephritis. The urine cytology findings were highly...
We analyzed the clinicoradiographic, microscopic, and immunophenotypic features of 21 tumors from 13 patients with mesenchymal chondrosarcoma (1 primary and 10 metastatic) and addressed the issue of their potential polyphenotypic differentiation. The immunophenotypic profile of the tumors was...
Microglandular adenosis (MGA) of the breast is an uncommon, benign lesion that may mimic invasive carcinoma and has recently been recognized as having significant premalignant potential. When carcinomas arise in MGA, there is often a transition from ordinary MGA to atypical MGA (AMGA) to...
The prevalence of human liver cancer shows a broad spectrum of variation in distinct geographical regions, depending on different risk factors, and their pathogenesis is poorly understood. We study the significance of molecular alterations of K-ras gene in human liver carcinomas in a...
We have encountered a number of endometrioid carcinomas with small papillary buds lacking fibrovascular cores that could be confused with the small cellular papillae of serous papillary carcinoma (SPC). We have designated these tumors “endometrioid carcinoma with small nonvillous papillae”...
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