Figure 6
From: Osteoclast-rich undifferentiated carcinomas of the urinary tract
(a) Osteoclast-like giant-cell tumor (bottom) accompanied by high-grade papillary urothelial carcinoma (top). (b) Carcinoma in situ overlying osteoclast-like giant-cell tumor. (c) Immunohistochemistry with cytokeratin 7 highlights keratin-positive mononuclear cells that appear to drop off from overlying CIS.
