In proctology, the Milligan-Morgan haemorrhoidectomy and Parks' submucosal haemorrhoidectomy are open and closed techniques respectively. The Longo procedure (stapled haemorrhoidopexy) acts by:
- A Excising haemorrhoidal tissue at the dentate line
- B Resecting a ring of redundant rectal mucosa above the dentate line, reducing prolapse and devascularising haemorrhoids ✓
- C Disrupting the haemorrhoidal blood supply by injecting sclerosant
- D Ligating haemorrhoidal pedicles with rubber bands
Correct answer: B. Resecting a ring of redundant rectal mucosa above the dentate line, reducing prolapse and devascularising haemorrhoids
Explanation
The Longo stapled haemorrhoidopexy (procedure for prolapse and haemorrhoids — PPH) uses a circular stapling device to excise a circumferential ring of prolapsed rectal mucosa and submucosa 3–4 cm above the dentate line, interrupting the submucosal haemorrhoidal arterial supply and restoring the haemorrhoidal cushions to their anatomical position. Because it operates above the dentate line in the insensate zone, it causes less postoperative pain than Milligan-Morgan.
Reference: Bailey & Love's Short Practice of Surgery, 27th ed.
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