Primary Signet-ring Cell Carcinoma of the Cecum

Abstract

Primary signet-ring cell carcinoma of colon is rare. We report a primary cecal signet-ring cell carcinoma of 50-year-old man. He was admitted to emergency department with a complaint of abdominal pain. Computed tomography (CT) images demonstrated irregular wall thickening involving cecum and proximal ascending colon. After right hemicolectomy, the large ulcerating mass revealed diffuse neoplastic proliferation of signet-ring cells in the whole layers of the cecum.