Carcinoid tumor presenting as annular lesion in the ascending colon.
D000230:Adenocarcinoma / Q000000981:diagnostic imaging*; D000368:Aged; D001706:Biopsy; D002276:Carcinoid Tumor / Q000000981:diagnostic imaging* / Q000473:pathology; D003110:Colonic Neoplasms / Q000000981:diagnostic imaging*; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D011859:Radiography