Colorectal & Anal Surgeries
Fistula in Ano
An anal fistula is an abnormal tunnel between the anal canal and the skin. It commonly follows an abscess and rarely heals permanently without a procedure. Treatment aims to close the tract while protecting sphincter muscles and continence.
Educational planning information. Individual advice follows examination and review of investigations. Consultations are available in Rawalpindi for patients from Rawalpindi and Islamabad.
Clinical focusColon, rectum and anal canal
01an anal fistula02Colon, rectum and anal canal03Colorectal & Anal Surgeries
Procedure-specific visual guideWhy choose Dr. Naveed
Experienced surgical judgement for Fistula in Ano
Clear diagnosis, realistic treatment planning and careful follow-up from a consultant surgeon whose clinical practice is shaped by academic teaching and military medical service.
01 · Understanding the procedure
What Fistula in Ano is designed to achieve
The internal opening often begins in an infected anal gland. The tract can be simple and low or pass through a substantial amount of sphincter muscle, branch, or recur after previous treatment.
An anal fistula is an abnormal tunnel between the anal canal and the skin. It commonly follows an abscess and rarely heals permanently without a procedure. Treatment aims to close the tract while protecting sphincter muscles and continence.
02 · Conditions treated
Conditions and clinical situations addressed by Fistula in Ano
The exact indication is confirmed from symptoms, examination and appropriate investigations.
What is an anal fistula?
The internal opening often begins in an infected anal gland. The tract can be simple and low or pass through a substantial amount of sphincter muscle, branch, or recur after previous treatment.
Persistent drainage or recurrent abscess
Persistent drainage or recurrent abscess
A tract is confirmed and spontaneous healing is unlikely
A tract is confirmed and spontaneous healing is unlikely
Sepsis must be controlled
Sepsis must be controlled
03 · Symptoms
Symptoms that may lead to a Fistula in Ano consultation
Persistent or intermittent pus or blood from an opening near the anus
Pain and swelling that may worsen if drainage stops
Recurrent abscesses, skin irritation or fever
Symptoms can overlap with other conditions. Severe, rapidly worsening or emergency symptoms require urgent medical assessment.
04 · Causes
Why the condition behind Fistula in Ano may develop
- 01
Previous anal abscess
- 02
Crohn’s disease
- 03
Less commonly trauma, infection, radiation or cancer
05 · Risk factors
Risk context considered before Fistula in Ano
Previous anal abscess
Previous anal abscess
Crohn’s disease
Crohn’s disease
Less commonly trauma
Less commonly trauma, infection, radiation or cancer
06 · Diagnosis
How the need for Fistula in Ano is assessed
Examination looks for external and internal openings and assesses sphincter function. MRI pelvis or endoanal ultrasound is useful for complex, recurrent or high fistulas. Examination under anaesthesia may define anatomy.
Clinical history
Examination looks for external and internal openings and assesses sphincter function.
Focused examination
MRI pelvis or endoanal ultrasound is useful for complex, recurrent or high fistulas.
Laboratory testing
Examination under anaesthesia may define anatomy.
Imaging
Imaging is chosen when it can define anatomy, disease extent or an alternative explanation for the symptoms.
Special investigations
Any endoscopy, tissue sampling, vascular study or other specialist test is selected for the clinical question raised by an anal fistula; not every patient needs every test.
07 · Treatment options
Treatment choices before and alongside Fistula in Ano
Observation, lifestyle measures, medical care, a focused procedure or surgery may be considered according to the confirmed diagnosis.
Targeted treatment
Control of acute abscess with drainage
Targeted treatment
Seton drainage to control infection and protect sphincter
Non-surgical option 03
Fistulotomy for selected low tracts
Surgical treatment
Sphincter-preserving procedures such as advancement flap or LIFT for selected complex fistulas
08 · Surgical indications
When Fistula in Ano may be recommended
Surgery is discussed only when the diagnosis, expected benefit, alternatives and individual risks support intervention.
- Persistent drainage or recurrent abscess
- A tract is confirmed and spontaneous healing is unlikely
- Sepsis must be controlled
- The operative strategy has been matched to sphincter involvement
09 · Procedure overview
The Fistula in Ano care pathway
Consultation
Discuss symptoms, priorities, previous care and relevant reports before deciding whether Fistula in Ano is appropriate.
Diagnosis
Examination looks for external and internal openings and assesses sphincter function.
Preparation
The team reviews medicines, anaesthetic readiness and procedure-specific instructions for Fistula in Ano.
Procedure
Fistulotomy opens a low tract so it heals from the base A loose seton keeps a complex tract draining
Recovery
Open wounds may require regular washing and dressings for several weeks.
Follow-up
Healing, symptoms and the result of Fistula in Ano are reviewed, with further care arranged when clinically necessary.
10 · Operative approach
How Fistula in Ano may be performed
- 01
Fistulotomy opens a low tract so it heals from the base
- 02
A loose seton keeps a complex tract draining
- 03
LIFT treats the tract between sphincter muscles
- 04
Advancement flap covers the internal opening without dividing major sphincter muscle
What Fistula in Ano aims to improve
- Control of recurrent infection and drainage
- Healing of the fistula where possible
- Sphincter-preserving planning for complex disease
Balanced consent for Fistula in Ano
- Persistence or recurrence, sometimes requiring staged operations
- Bleeding, infection and delayed wound healing
- Continence change, with risk related to tract anatomy and amount of sphincter divided
No operation can guarantee an outcome. Personal risk depends on diagnosis, anatomy, health and the final technique.
13 · Recovery timeline
Recovery checkpoints after Fistula in Ano
Open wounds may require regular washing and dressings for several weeks. Bowel movements continue, so pain control and soft stool are important. Complex fistulas often need staged treatment rather than one operation. These checkpoints are planning prompts—not promises—and the treating team’s instructions take priority.
Week 1
Open wounds may require regular washing and dressings for several weeks. Early priorities include pain control, safe movement and the first wound or procedure check when advised.
Week 2
Wash gently after bowel movements and use dressings as advised Activity still follows the individual discharge plan.
Week 4
Keep stool soft and avoid straining Return to work or exercise depends on the procedure and job demands.
Week 6
Attend seton and wound follow-up A slower or faster course can both be normal depending on the operation.
Long-term
Control of recurrent infection and drainage Ongoing surveillance or specialist follow-up is arranged when the diagnosis requires it.
14 · Preparation
Preparing safely for Fistula in Ano
01
Bring the complete record
Take reports, imaging, pathology and details of previous treatment relevant to an anal fistula.
02
Review medicines and allergies
Share prescribed medicines, blood thinners, diabetes treatment, supplements and allergies. Do not stop treatment without clinical instruction.
03
Complete pre-operative checks
Examination looks for external and internal openings and assesses sphincter function.
04
Follow fasting instructions
Fasting depends on the anaesthesia plan for Fistula in Ano; use the exact times supplied by the treating hospital.
05
Prepare for discharge
Arrange transport, suitable support and the supplies recommended for the expected often day case; complex fistula treatment can require admission.
06
Know the recovery plan
Ask about wounds, bathing, diet, lifting, driving, work, exercise and the warning signs specific to Fistula in Ano.
15 · Aftercare
Aftercare following Fistula in Ano
Written discharge instructions are individualized. Keep them accessible and contact the treating team when recovery differs from the expected plan.
- Wash gently after bowel movements and use dressings as advised
- Keep stool soft and avoid straining
- Attend seton and wound follow-up
- Seek urgent care for fever, worsening pain, a new swelling or inability to pass urine
16 · Patient questions
Frequently asked questions about Fistula in Ano
Ten procedure-specific answers to support a more informed consultation.
01Why not simply cut out every fistula?+
Some tracts cross sphincter muscle. Aggressive division can impair continence, so anatomy determines the safest procedure.
02What is a seton?+
It is a loop placed through the tract to maintain drainage or support staged treatment.
03Can a fistula come back?+
Yes. Branching tracts, Crohn’s disease and previous surgery can increase recurrence risk.
04How is the need for Fistula in Ano confirmed?+
Examination looks for external and internal openings and assesses sphincter function. MRI pelvis or endoanal ultrasound is useful for complex, recurrent or high fistulas. Examination under anaesthesia may define anatomy.
05When might Fistula in Ano be recommended?+
Persistent drainage or recurrent abscess A tract is confirmed and spontaneous healing is unlikely
06Are there alternatives to Fistula in Ano?+
Control of acute abscess with drainage Seton drainage to control infection and protect sphincter Fistulotomy for selected low tracts
07What anaesthesia may be used for Fistula in Ano?+
Local, regional or general, depending on the procedure. The anaesthetist confirms the safest option after reviewing the operation, medical history and individual risk.
08How long might I stay in hospital after Fistula in Ano?+
Often day case; complex fistula treatment can require admission. Discharge depends on the procedure, pain control, mobility, eating or drinking where relevant, and the absence of concerning findings.
09What should I expect while recovering from Fistula in Ano?+
Open wounds may require regular washing and dressings for several weeks. Bowel movements continue, so pain control and soft stool are important. Complex fistulas often need staged treatment rather than one operation.
10Which warning signs matter after Fistula in Ano?+
Follow the discharge instructions provided by the treating team. Important procedure-specific advice includes: Attend seton and wound follow-up Seek urgent care for fever, worsening pain, a new swelling or inability to pass urine
Authoritative patient-information referencesGeneral education supporting this procedure guide.
17 · Meet your surgeon
Dr. Naveed Ahmed Sheen
Consultant Colorectal & Laparoscopic SurgeonAssistant Professor and Major (Retired), combining 15+ years of surgical experience with academic teaching, military medical service and a patient-centred approach.
- MRCS · Dip (AFPGMI) · CHPE
- 1000+ successful surgeries
- 5000+ patients treated
Confidential surgical consultationDiscuss Fistula in Ano
Discuss Fistula in Ano
with Dr. Naveed
Bring your symptoms, reports and questions for a diagnosis-led discussion of appropriate options, benefits, risks and recovery planning.