Abstract
A case of collecting duct carcinoma of the kidney, with bone marrow metastases, in which there was production of alpha-fetoprotein is described. The tumor showed the typical light microscopic and immunohistochemical characteristics of collecting duct carcinoma. Alpha-fetoprotein was demonstrated immunohistochemically within tumor cells in both the primary and metastatic lesions. The clinical course was aggres sive ; the patient died within a few months of diagnosis. Int J Surg Pathol 1(4):239-244, 1994
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