Surgery · UKMLA & AKT
Intussusception
A free high-yield preview for the UKMLA Applied Knowledge Test, covering how to recognise this condition. The full SA Note notes add investigations, management and complications, with practice questions on this topic.
Key high-yield points
- Proximal bowel (intussusceptum) telescopes into distal bowel (intussuscipiens) causing obstruction and vascular compromise
- Most common in infants aged 3 months - 2 years; peak 5-9 months; 2x more common in boys
- Majority idiopathic (hypertrophy of Peyer's patches post-viral); beyond age 2, pathological lead point more likely
- Most common site: ileocolic (ileocaecal junction)
- Pathological lead points: Meckel's diverticulum (most important), polyps, lymphoma, HSP submucosal haematoma
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