Secondary prostatic neoplasms are rarely reported, and of those that are, the most common are metastatic tumors associated with lymphoma and leukemia. 1,2 This report describes a patient with metastatic prostatic adenocarcinoma of the stomach. The patient had received subtotal gastrectomy following definitive diagnosis. Immunohistochemical staining of the specific markers was done retrospectively to determine the origin of the adenocarcinoma. In the future, when a secondary prostatic neoplasm is suspected, the stomach should be considered as a possible primary tumor site. Copyright (C) 2013, Taiwan Urological Association. Published by Elsevier Taiwan LLC.