Primary Adenocarcinoma Of Urinary Bladder Initially Diagnosed As Metastatic Adenocarcinoma: A Case Report

Primary adenocarcinoma of the urinary bladder is a rare neoplasm sometimes causing diagnostic challenge because it can be indistinguishable morphologically from adenocarcinoma secondarily involving the bladder by metastasis or direct extension. Identifying the primary origin of the tumor is important in staging, determining appropriate therapy and assessing prognosis. We report herein a case of primary adenocarcinoma of the bladder misdiagnosed as metastatic adenocarcinoma and reviewed the histopathologic features and diagnostic characteristics of primary adenocarcinoma of bladder in view of literature.