Detailed chapter

Anal Fistula — Abscess and Fistula Link

Name: Abscess and Fistula Link
Creator: Assoc. Prof. Cengiz Dibekoğlu, MD

Infection first, tunnel second

Most anal fistulas begin with a perianal abscess—painful swelling that may drain spontaneously or surgically. If the track does not heal, a fistula persists. Not every abscess becomes a fistula, but repeat abscess at one site is a major warning sign.

3D diagram: abscess and fistula — Abscess · fistula pathway · English labels below

Key points

Step 1: Abscess
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Gland infection → pus pocket with throbbing pain, redness, sometimes fever. Treatment is drainage—not antibiotics alone.
Step 2: Fistula
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If a channel remains between the internal opening and skin, discharge continues or the abscess refills.
When both are managed together
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Drainage is urgent; a loose seton may be placed. Definitive closure (LIFT, flap, laser…) usually waits until sepsis is controlled.
Recurrent abscess meaning
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Repeat swelling means map the track (exam ± MRI) rather than repeat antibiotics only.

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This page is for education. It is not medical advice and does not replace a visit with your physician.

Medical editor: Assoc. Prof. Cengiz Dibekoğlu, MD · Last medically reviewed: August 2026 · English patient-education chapter.