title: Solitary metastatic colon cancer showing a small depressed configuration.
abstract: We herein present a case of IIc-like metastatic lung cancer that was detected early. A 65-year-old man presented with diarrhea and difficulty walking. Colonoscopy demonstrated a depressed lesion in the descending colon. However, the appearance of the lesion by endoscopy with a magnifying objective was not compatible with early colon cancer. Therefore, we performed diagnostic endoscopic mucosal resection to allow for an examination of the whole lesion. A histological examination demonstrated lung cancer metastasis to the colon. Only 1.6% of lung cancers metastasize to the large intestine, and metastatic colorectal cancer is not usually detected at an early stage. In the present case, however, endoscopy and a histological examination revealed alterations in the mucosal configuration of the lesion, which were unusual for early colon cancer.
authors.affiliation: Endoscopy Division, National Cancer Center Hospital, Japan.
authors.forename: Hidetsugu
authors.initials: H
authors.lastname: Yamagishi
authors.forename: Taku
authors.initials: T
authors.lastname: Sakamoto
authors.forename: Takahisa
authors.initials: T
authors.lastname: Matsuda
authors.forename: Takeshi
authors.initials: T
authors.lastname: Nakajima
authors.forename: Yutaka
authors.initials: Y
authors.lastname: Saito
mesh_terms: D000230:Adenocarcinoma / Q000175:diagnosis / Q000556:secondary* / Q000601:surgery; D000368:Aged; D003106:Colon / Q000473:pathology*; D003110:Colonic Neoplasms / Q000175:diagnosis / Q000556:secondary* / Q000601:surgery; D003113:Colonoscopy; D004724:Endoscopy; D006801:Humans; D008175:Lung Neoplasms / Q000473:pathology; D008297:Male