Clinical Outcomes of Lateral Internal Sphincterotomy for Patients with Chronic Anal Fissure

conservative management. Perianal abscess or fistula was present in three patients (0.3%), who underwent incision and drainage or a simple fistulotomy. Incontinence was present in two cases (0.2%). One patient was lost to follow up, and the other patient was improved by conservative management. Conclusions: LIS is a safe and effective treatment for patients with chronic anal fissure, and recurrence and complications of LIS are rare. J Korean Soc Coloproctol 2007;23:292-296