title: [Primary squamous cell carcinoma of the ascending colon: report of a case and Korean literature review].
abstract: Primary squamous cell carcinoma of the colon is an extremely rare malignancy. A 48-year-old male visited our hospital for screening colonoscopy. Colonoscopic examination showed a 1 cm sized sessile polyp in the ascending colon. The patient underwent endoscopic mucosal resection (EMR) without any complication. The pathologic findings were compatible with squamous differentiation of tumor cells in inflammatory colonic mucosa. The tumor was confined to the mucosa and the margins of the excised tissue were found to be free of the tumor. There were no other primary sites and no distant metastases in the extensive evaluation using a whole body CT scan and PET-CT. Additional surgical resection was not done. Follow-up colonoscopy performed eight month later showed a whitish scar without evidence of local recurrence and follow-up PET-CT demonstrated no evidence of recurrence. Herein, we report a case of primary squamous cell carcinoma of the ascending colon presenting as a sessile polyp which was removed by EMR.
authors.affiliation: Department of Internal Medicine, Chonnam National University Medical School, 160 Baekseo-ro, Dong-gu, Gwangju 501-746, Korea.
authors.forename: Dong Keun
authors.initials: DK
authors.lastname: Cho
authors.forename: Sang Hun
authors.initials: SH
authors.lastname: Kim
authors.forename: Sung Bum
authors.initials: SB
authors.lastname: Cho
authors.forename: Wan Sik
authors.initials: WS
authors.lastname: Lee
authors.forename: Young Eun
authors.initials: YE
authors.lastname: Joo
mesh_terms: D000328:Adult; D000368:Aged; D044466:Asian People; D002294:Carcinoma, Squamous Cell / Q000175:diagnosis* / Q000473:pathology; D044682:Colon, Ascending; D003110:Colonic Neoplasms / Q000175:diagnosis* / Q000473:pathology; D003113:Colonoscopy; D005260:Female; D006801:Humans; D007413:Intestinal Mucosa / Q000473:pathology / Q000601:surgery; D008297:Male; D008875:Middle Aged; D049268:Positron-Emission Tomography; D056910:Republic of Korea; D014057:Tomography, X-Ray Computed