Collision tumor of the urinary bladder comprising Large cell neuroendocrine carcinoma and adenocarcinoma

Abstract

Large cell neuroendocrine tumors of the bladder are rare tumors. Their co-association with adenocarcinoma is even rarer. We present a third undisputed case of collision tumor comprising large cell neuroendocrine carcinoma and adenocarcinoma of the urinary bladder in a 73-year-old gentleman with a revisit to its origin and histogenesis.

Keywords

• adenocarcinoma
• bladder
• neuroendocrine