Classification and management of postsurgical anal stenosis

Area of Science:

• Colorectal Surgery
• Gastroenterology
• Surgical Complications

Background:

• Postoperative anal stenosis is a significant complication following anal surgeries.
• Current management strategies for anal stenosis lack a universally defined optimal approach.
• This study addresses the need for defined treatment protocols based on stenosis characteristics.

Purpose of the Study:

• To review outcomes of various surgical interventions for postoperative anal stenosis.
• To propose a treatment algorithm based on the etiology, severity, and location of anal stenosis.
• To evaluate the efficacy of different surgical techniques in managing anal stenosis.

Main Methods:

• Retrospective review of 212 patients with postoperative anal stenosis over five years.
• Categorization of stenosis by etiology (hemorrhoidectomy, Crohn's disease, other).
• Analysis of treatment outcomes for V-Y anoplasty, sphincterotomy, and advancement flap anoplasty based on stenosis severity and location.

Main Results:

• Hemorrhoid operations were the most common cause (87.7%).
• V-Y anoplasty showed high success (90%) for severe lower anal stenosis.
• Internal anal sphincterotomies were effective for middle, upper, and entire anal canal stenoses (83%).

Conclusions:

• A tiered treatment approach for anal stenosis is proposed, considering cause, severity, and location.
• V-Y anoplasty is recommended for severe lower anal stenosis.
• Internal anal sphincterotomies are effective for mild-to-moderate lower, middle, upper, and entire anal canal stenoses.