What's Up in Surgery? — Numbers · Anal Complex — Haemorrhoids, Fissure, Abscess & Fistula-in-Ano

Card 1 of 27: Abscess incidence

QualifiedAnal Complex — Haemorrhoids, Fissure, Abscess & Fistula-in-Ano 📖 Ch 1 · Colorectal, Anorectal & Pilonidal Disease

COL-ANA-ABS-PREV-01

Abscess incidence

First anorectal abscess incidence

The number is concealed — recall it first, then flip the card and grade yourself honestly.

COL-ANA-ABS-PREV-01 · Abscess incidence

20.2 per 100,000 population/year

Qualified. Single source, or abstract-level verification — provisional

Applies to — the population, exactly as printed

England, Hospital Episode Statistics; 165,536 first abscesses identified (158,713 with complete data)

Sources

Sahnan et al., Br J Surg 2017;104:1857–1865 — PMID 28857130, DOI 10.1002/bjs.10614 (abstract-verified with full denominators)
DOI 10.1002/bjs.10614

Grade yourself — spaced repetition

Verification stamp: 🟡 Qualified · Registry audit 2026-11-06 · Pending triple review · Surgery Code registry — family file 07 (07-anal-complex.md), coded unit; registry audit 2026-11-06. Permalink to this card