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stevenshen 离线
lixingxing 离线
This is an extremely challenging case. Gross color, microscopic appearance and immunohistochemical profile are not consistent with renal cell carcinoma, clear cell type.
This tumor is rich in vessels and has focal glomeruloid growth pattern. These are the features of renal cell carcinoma, papillary type. I do not favor urothelial carcinoma. If this is my case, I would send it to an expert for consultation or call it as renal cell carcinoma, unclassified type. Renal cell carcinoma, unclassified type is a diagnostic category to which renal carcinoma should be assigned when they do not fit readily into one of the other categories.