title: [A case of small duodenal carcinoid tumor with liver metastasis].
abstract: Carcinoid tumors are slow growing submucosal tumors with metastatic potential that arise from enterochromaffin cell. The annual incidence of carcinoid tumor is 2 to 3 per 100,000. Carcinoid tumor of duodenum is very rare with an incidence of about 8% among gastrointestinal carcinoid tumor. As a endoscopic examination and immunohistochemical stain are developed, an rate of detection is increasing. Among the possible factor of metastatic prediction, tumor size >10 mm, central depression or ulcer, invasion below submucosa, lymphatic or venous invasion are associated with higher metastatic potential. Specially, in case of tumor size <10 mm, in duodenum, there is no report of metastasis to liver in Korea. But, recently, we experienced a rare care of duodenal carcinoid measured by less than 10 mm with liver metastasis. Thus, we report here this case with a review of literature.
authors.affiliation: Department of Internal Medicine, Hanyang University College of Medicine, Seoul, Korea.
authors.forename: Jai Hoon
authors.initials: JH
authors.lastname: Yoon
authors.forename: Oh Young
authors.initials: OY
authors.lastname: Lee
authors.forename: Seung Chul
authors.initials: SC
authors.lastname: Cho
authors.forename: Hang Lak
authors.initials: HL
authors.lastname: Lee
authors.forename: Byung Chul
authors.initials: BC
authors.lastname: Yoon
authors.forename: Ho Soon
authors.initials: HS
authors.lastname: Choi
authors.forename: Soon Young
authors.initials: SY
authors.lastname: Song
authors.forename: Seung Sam
authors.initials: SS
authors.lastname: Baeg
mesh_terms: D000369:Aged, 80 and over; D002276:Carcinoid Tumor / Q000175:diagnosis* / Q000473:pathology; D003937:Diagnosis, Differential; D004379:Duodenal Neoplasms / Q000175:diagnosis* / Q000473:pathology; D005260:Female; D006801:Humans; D008113:Liver Neoplasms / Q000175:diagnosis / Q000473:pathology / Q000556:secondary*; D009362:Neoplasm Metastasis; D014057:Tomography, X-Ray Computed