Anal sphincter dysplasia

Overview

Anal sphincter dysplasia (ASDP) is a malformation of the anal canal. Anal dysplasia is a pre-cancerous condition which occurs when the lining of the anal canal undergoes abnormal changes. It can be classified as low-grade squamous intraepithelial lesions (LSIL) and high-grade squamous intraepithelial lesions (HSIL). Most cases are not associated with symptoms, but people may notice lumps in and around the anus.

Symptoms

  • Chronic constipation
  • Difficulty moving stool
  • Frequently soiled underwear
  • Fecal incontinence
  • Chronic paradoxical diarrhea
  • Encopresis
  • Fecal impaction
  • Displaced anal opening

Treatment

Surgery is one option for this disease.

Resources

  • NIH