Longitudinal partial sphincter resection for super-low rectal carcinoma: an analysis of 12 cases        XIA Zhi-xiu, CONG Jin-chun, CHEN Chun-sheng. Department of Colorectal Tumor Surgery, Shengjing Hospital of China Medical University, Shenyang110004, China
Corresponding author: CHEN Chun-sheng, E-mail: chenchunsheng @sj-hospital.org
Abstract    Objective    To explore the curative effect of longitudinal partial sphincter resection for super-low rectal carcinoma. Methods    The clinical data of 12 cases of super-low rectal carcinoma performed longitudinal partial sphincter resection between January 2004 and April 2008 at Shengjing Hospital of China Medical University were analyzed retrospectively. Functional results were assessed by vector manometry. Results    There was no postoperative mortality, and no cases developed local recurrence during the median observation period of 35.5 months. One case had distant metastasis at 24 months, and underwent resection of the left liver. Anorectal vector manometry showed significantly increased maximum resting and squeezing anal pressures, and declined maximum resting and squeezing anal volumes. The radial asymmetry index, either during resting status or squeezing status, was significantly higher after operation. But all the indexes trended towards normal over time. Conclusion    Curability and acceptable anal function can be obtained by longitudinal partial sphincter resection for super-low rectal carcinoma.