Infection · UKMLA & AKT
Perianal abscesses and fistulae
A free high-yield preview for the UKMLA Applied Knowledge Test. Below are the key points to recognise perianal abscesses and fistulae — the full SA Note notes add investigations, management, complications and 10 practice questions.
Key high-yield points
- Perianal abscess is an acute collection of pus in the perianal/anorectal region; fistula-in-ano is its chronic sequela - an epithelialised tract connecting the anorectal canal to the perianal skin. Both arise from infected anal (cryptoglandular) glands in the intersphincteric space.
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