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Keyhole deformity: a case series.
Osman Yüksel1, Hasan Bostanci, Sezai Leventoğlu
1Department of Surgery, Gazi University Medical School, Ankara, Beşevler 06500, Turkey. yukselo@gazi.edu.tr
Summary
Keyhole deformity, a complication of anal fissure treatment, can be managed conservatively or surgically. Surgical repair options include advancement flap and diamond flap reconstruction for persistent cases.
Area of Science:
- Colorectal Surgery
- Anorectal Disorders
Background:
- Keyhole deformity is a recognized complication following anal sphincterotomy procedures.
- It can also occur independently of surgical history, presenting a diagnostic challenge.
Purpose of the Study:
- To highlight the surgical significance of keyhole deformity.
- To discuss treatment strategies for this condition.
Main Methods:
- Retrospective analysis of patients treated for chronic anal fissure.
- Inclusion of patients who developed keyhole deformity post-treatment or were referred.
Main Results:
- Fifteen patients (out of 926) developed significant keyhole deformity.
- Conservative treatment succeeded in 2 patients; 13 required surgery.
- Surgical interventions included advancement flap (9 patients) and diamond flap (4 patients) reconstruction.
Conclusions:
- Keyhole deformity is an occasional late complication of chronic anal fissure.
- The condition may be asymptomatic or well-tolerated.
- Treatment is tailored to the functional impairment caused by the deformity.
