Rectal prolapse

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Rectal prolapse is a benign pathology of the rectum, typically seen in women that are multiparous and postmenopausal.

General

  • Usually close to the anal verge.
  • Rare forms can occasionally be confused with cancer.[1]

Epidemiology:

  • ~90% women, postmenopausal and multiparous.[2]

Treatment:

  • Surgical:
    • Delorme procedure = mucosa stripped.

Microscopic

Features:[3]

  • "Fibromuscular hyperplasia" - key feature:
    • Fibrosis (submucosa, lamina propria).
    • Muscularis mucosae is "too superficial" (muscle in the lamina propria).
  • Surface ulceration + inflammation (neutrophils).
  • +/-Serration of epithelium at the surface.

Notes:

  • Important negative: no nuclear atypia.

Images

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RECTAL MUCOSA, DELORME PROCEDURE:
- SUPERFICIAL RECTAL WALL WITH FIBROMUSCULAR HYPERPLASIA AND EDEMA.
- NEGATIVE FOR DYSPLASIA AND NEGATIVE FOR MALIGNANCY. 

Micro

The sections show rectal mucosa, submucosa and a small amount of muscularis propria. The mucosa shows fibromuscular hyperplasia with thickening of the muscularis mucosae and mild lamina propria fibrosis. The submucosa is edematous. The small amount of muscularis propria is unremarkable. The epithelium matures normally to the surface. No significant nuclear atypia is identified.

See also

References

  1. Brosens LA, Montgomery EA, Bhagavan BS, Offerhaus GJ, Giardiello FM (November 2009). "Mucosal prolapse syndrome presenting as rectal polyposis". J. Clin. Pathol. 62 (11): 1034–6. doi:10.1136/jcp.2009.067801. PMC 2853932. PMID 19861563. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2853932/.
  2. Lee, S.; Kye, BH.; Kim, HJ.; Cho, HM.; Kim, JG. (Feb 2012). "Delorme's Procedure for Complete Rectal Prolapse: Does It Still Have It's Own Role?". J Korean Soc Coloproctol 28 (1): 13-8. doi:10.3393/jksc.2012.28.1.13. PMID 22413077.
  3. Schneider A, Fritze C, Bosseckert H, Machnik G (1988). "[Primary clinical, endoscopic and histologic findings in solitary rectal ulcer]" (in German). Dtsch Z Verdau Stoffwechselkr 48 (3-4): 183–9. PMID 3234303.