Narrowband imaging colonoscopy with a transparent hood for diagnosis of a squamous cell carcinoma in situ in the anal canal

• DOI: 10.1055/s-0029-1244038
• Publication Date: 2010-07-16T21:07:02Z
• Authors: Y. Oono; K. Fu; H. Nakamura; Y. Iriguchi; A. Yamamura; D. Kishi; J. Oda; H. Ikematsu; M. Mizutani; S. Takayanagi; Y. Tomino
• Keywords: Anus; Carcinoma in situ

Anal cancer is a relatively rare malignancy [1]. An analysis of the National Cancer Data Base showed that most patients with anal carcinoma (71.1 %) required invasive treatments such as chemoradiation therapy or without surgery, and 5-year overall survival for these was 58.0 % [2]. squamous cell in situ (CIS) accounts almost 10 all carcinomas [3]. Here we present case canal CIS incidentally detected patient at low risk developing cancer. The presence, histology, spread depth invasion tumor were correctly diagnosed by narrowband imaging (NBI) magnification.