Written and medically reviewed by: Assoc. Prof. Cengiz Dibekoğlu, MD, General SurgeryLast updated:
Seton for Anal Fistula
A seton drains sepsis and can stage sphincter division — a control tool, not always the final cosmetic answer.
A seton is a thread or vessel loop placed through the fistula track to keep drainage open and prevent recurrent closed abscesses. Loose setons control infection while inflammation settles or Crohn’s therapy works; cutting setons gradually divide sphincter muscle in selected protocols. It is often a bridge to later definitive repair (LIFT, flap) rather than a single magical cure. Continence risk and track height should be mapped before any cutting procedure is chosen.
Educational schematic. Some structures may be simplified or emphasized for clarity; not an exact anatomical depiction.
© Cengiz Dibekoğlu — illustrative; not for unauthorized use
Figure summary
- Labeled on this figure: Tract · Sphincter · Drainage.
- Related figures on this page: Classification, LIFT alternative.
Figure labels (English)
- Tract
- Sphincter
- Drainage
Related educational figures
Tap a figure to enlarge.
Classification Educational schematic. Some structures may be simplified or emphasized for clarity; not an exact anatomical depiction.
© Cengiz Dibekoğlu — illustrative; not for unauthorized use
Figure summary
Classification
LIFT alternative Educational schematic. Some structures may be simplified or emphasized for clarity; not an exact anatomical depiction.
© Cengiz Dibekoğlu — illustrative; not for unauthorized use
Figure summary
LIFT alternative
Who may be a candidate?
- Active fistula with ongoing sepsis risk
- Complex/high tracks awaiting definitive repair
- Crohn’s-related fistulas needing drainage during medical therapy
Possible advantages
- Continuous drainage reduces trapped abscess risk
- Buys time for imaging, medical therapy, or staged surgery
- Office-manageable care in many pathways
Limits & realistic expectations
- Loose setons alone may not close the track
- Cutting setons risk continence trade-offs if overused
- Local discomfort and discharge while the seton remains
Step-by-step overview
- 1
Clarify the clinical question
Initial drainage, staged seton, or definitive repair — why now?
- 2
Gather records
Prior drainage notes, MRI or exam reports, and operative records if any.
- 3
Assess urgency
Match fever, cellulitis, and pain to urgent drainage versus elective planning.
- 4
Compare pathways
Discuss seton, LIFT, flap, fistulotomy, or medical therapy with continence themes.
- 5
Plan follow-up
Agree on dressing care, warning symptoms, and who to contact after hours.
Key points
- Key note inside
Technique vs indication
A named technique is only useful when anatomy and disease biology fit. Conversion to another approach can be a safety decision, not a failure. Discuss timing, alternatives, and follow-up with your surgical team before you finalize a plan.
- Key note inside
Important
This page is for education. It is not medical advice and does not replace a visit with your physician.
Frequently asked questions
What is a seton?
A drain left in the fistula track to control infection before or instead of immediate definitive repair.
Is a seton permanent?
Sometimes long-term; sometimes a bridge to LIFT, flap, or other repair.
Will it hurt?
Discomfort varies; infection control is the priority.
Can I work with a seton?
Many people do, with hygiene guidance from the team.
More chapters in this hub
Diagnosis & anatomy
Anal Fistula Symptoms
Discharge, recurrent abscess, and urgent warning signs
What Causes an Anal Fistula?
Abscess, Crohn’s, and other triggers
Abscess and Fistula Link
Infection first, tunnel second
Anal Fistula Classification
Simple versus complex — explained for shared decisions
Anal Fistula Diagnosis
Exam, MRI mapping, and Parks classification
Simple fistula
Complex fistula
Seton
LIFT / flap
Crohn
Newer sphincter-preserving techniques
Recovery / recurrence / continence
Appointment / info
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.