Gastroenterology · UKMLA & AKT
Anal fissure
A free high-yield preview for the UKMLA Applied Knowledge Test. Below are the key points to recognise anal fissure — the full SA Note notes add investigations, management, complications and 10 practice questions.
Key high-yield points
- An anal fissure is a linear tear in the squamous mucosal lining of the anal canal, almost always at the posterior midline. A vicious cycle of pain → IAS spasm → raised anal pressure → ischaemia → impaired healing underlies chronicity.
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