Tumor to tumor metastasis of renal cell carcinoma in carcinoma stomach: An unusual case presentation

Abstract

Tumor-to-tumor metastasis (TTM) is a rare phenomenon of hematogenous metastasis of one tumor to another type of tumor. Renal cell carcinoma (RCC) has been involved in the TTM either as a donor or recipient. Herein, we report an unusual case of RCC metastasis to primary carcinoma stomach. This is the first of its kind to be reported in the literature.