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Journal of the Korean Society of Coloproctology 2000;16(5):334-338.
Ultralow Anterior Resection and Coloanal Anastomosis for Distal Rectal Cancer Functional and Oncologic Results.
Kim, Nam Kyu , Lim, Dae Jin , Yun, Seong Hyeon , Lee, Kang Young , Sohn, Seung Kook , Min, Jin Sik
Department of Surgery, Yonsei University College of Medicine, Seoul, Korea.
Abstract
PURPOSE
Coloanal anastomosis (CAA) following ultralow anterior resection became more popular techniques for preservation of anal sphincter in distal rectal cancer. The purpose of this study is to evaluate a functional and oncologic safety of patients who underwent ultralow anterior resection and coloanal anastomosis for distal rectal cancer.
METHODS
Forty-eight patients underwent coloanal anastomosis following ultralow anterior resection between January 1988 and January 1998. Main operative techniques were total mesorectal excision with autonomic nerve preservation. Colonic J pouch was made 8 cm in length with GIA 95. All patients were followed up for fecal or gas incontinence, frequency of bowel movement and local or systemic recurrences.
RESULTS
Mean tumor distance from anal verge was 4.0 cm. Postoperative complications were transient urinary retention (N=7), anastomotic stenosis (N=3), anastomotic leakage (N=3), rectovaginal fistula (N=2), cancer positive margin (N=1; patient refuses reoperation). Overall recurrences occurred in 7/48 (14.5%). Local recurrence (N=1) and systemic recurrence (N=1) in Astler-Coller stage B2, local recurrence (N=1), systemic recurrence (N=2) and combined local and systemic recurrence (N=2) in Astler-Coller stage C2. Mean frequency of bowel movement were 6.1 per day at 3 month, 4.4 at 1 year and 3.1 at 2 years. Kirwan grade for fecal incontinence were 2.7 at 3 months, 1.8 at 1 year and 1.5 at 2 years.
CONCLUSIONS
With careful selection of patients and good operative techniques, CAA can be performed safely in distal rectal cancer. Normal continence and acceptable frequency of bowel movements can be obtained at 1 year after operation without compromising the rate of local recurrence.
Key Words: Rectal cancer; Coloanal anastomosis; Ultralow anterior resection


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