A loose drainage seton causes minimal discomfort in most patients. There may be mild perianal wetness from drainage, managed with pads.

✦ ANAL FISTULA · STAGED TREATMENT

Seton Placement

Q: How long will I need to have the seton?

A loose drainage seton is maintained for 6–12 weeks — longer for Crohn's fistulas while biologic therapy takes effect.

Q: Can the seton cure the fistula on its own?

A loose drainage seton manages rather than cures the fistula. It controls infection and prepares the tract for definitive surgery.

Staged drainage seton for complex anal fistulas — maintaining tract drainage while inflammation resolves.

45–60 Min TREATMENT DURATION

Day Care CARE SETTING

Surgical APPROACH

1–2 Weeks RECOVERY TIMELINE

What is Seton Placement?

A seton is a thread or suture passed through the fistula tract and tied loosely as a loop. It is used as a staged approach for complex high fistulas, maintaining drainage, controlling infection, and allowing post-inflammatory fibrosis before definitive sphincter-preserving surgery. Dr. Tagore Mohan Grandhi uses seton placement as the first stage for complex and Crohn's-related fistulas. The seton is kept in place for 6–12 weeks while inflammation resolves and biologic therapy is established before definitive closure.

Suitable for patients with complex high transsphincteric or suprasphincteric fistulas where definitive surgery cannot be safely performed at the initial presentation due to active sepsis or complex anatomy.

How the Procedure Works

Examination Under Anaesthesia (EUA)

Fistula anatomy confirmed under anaesthesia. All tracts, secondary extensions, and internal opening identified. Entire tract probed.

Seton Threading

Non-absorbable thread (silastic sloop or 0 PDS) passed through the tract from external to internal opening.

Loose Tie

Seton tied loosely as a comfortable loop — maintains drainage without cutting through muscle.

Biologic Therapy

For Crohn's fistulas, biologic therapy commenced and continued with seton in situ to control inflammation.

Definitive Surgery Planning

Definitive sphincter-preserving procedure planned at 6–12 weeks once tract is fibrosed, quiescent, and ready.

Outcomes

45–60 MinTREATMENT DURATION

Day CareCARE SETTING

SurgicalAPPROACH

1–2 WeeksRECOVERY TIMELINE

Who Needs This Treatment?

→Controls infection and prevents recurrent abscess during staged treatment
→Allows inflammation to subside making definitive surgery safer
→Essential first step for Crohn's fistulas before biologic treatment
→Preserves all future treatment options — no sphincter damage from seton

The seton is the first step in treating complex fistulas safely. It controls the infection, matures the tract, and gives us the time to plan the definitive sphincter-preserving procedure without rushing.

— Dr. Tagore Mohan Grandhi, Senior Consultant Gastrointestinal Surgeon, Lux Hospitals, Hyderabad

Common Questions

Frequently Asked Questions

How long will I need to have the seton?+

Is a seton painful?+

Can the seton cure the fistula on its own?+

Not sure which treatment is right for you?

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