Overview
Acquired anal stenosis is a narrowing of the anal canal, often resulting from surgical interventions such as hemorrhoidectomy or anorectal procedures, leading to significant functional impairment and discomfort 2.Diagnosis
Clinical presentation includes pain, bleeding, and difficulty with defecation 2.
Endoscopic evaluation to assess the extent and location of stenosis 2.
Grading based on severity and level (lower, middle, upper part of the anal canal) 2.Management
First-line treatments:
- Dilation under anesthesia for stenosis associated with Crohn's disease 2.
- V-Y anoplasty for severe lower anal canal stenosis 2.
- Simple sphincterotomy or multiple anal sphincterotomies for lower anal canal stenosis 2.
Adjunctive treatments:
- Subcutaneous prepuce flap reconstruction for complex cases, particularly in males, offering reliable vascularity and adaptability 1.Special Populations
Crohn's disease: Dilation under anesthesia shows good results 2.
Pediatrics and elderly: Specific management strategies not detailed in provided abstracts 2.Key Recommendations
For stenosis associated with Crohn's disease, perform dilation under anesthesia as a first-line treatment (Evidence: Moderate 2).
Severe lower anal canal stenosis should be addressed with V-Y anoplasty (Evidence: Moderate 2).
Complex cases, especially in males, may benefit from subcutaneous prepuce flap reconstruction for definitive repair (Evidence: Weak 1).References
1 Sakai S, Yoshinaga R. The prepuce flap in the reconstruction of male anal stenosis. British journal of plastic surgery 1999. link
2 Milsom JW, Mazier WP. Classification and management of postsurgical anal stenosis. Surgery, gynecology & obstetrics 1986. link