Anal canal duplication.
Adnan Narci1, Fatma Hüsniye Dilek, Salih Cetinkurşun
1Department of Pediatric Surgery, Faculty of Medicine, Afyon Kocatepe University, Cocuk Cerrahisi AD, Afyon, Turkey. adnannarci@yahoo.com
European Journal of Pediatrics
|October 27, 2009
Summary
Anal canal duplication (ACD) is a rare congenital anomaly presenting as a second anal opening. Surgical excision is recommended to prevent complications like inflammation and cancer.
Area of Science:
- Pediatric Surgery
- Congenital Anomalies
- Gastroenterology
Background:
- Anal canal duplication (ACD) is an exceptionally rare congenital intestinal anomaly.
- Defined as a secondary anal orifice posterior to the true anus, ending blindly without rectal connection.
- Typically, ACD occurs without other hindgut pathologies and patients are often asymptomatic.
Observation:
- Two cases of ACD in infants (9-month-old and 1-year-old girls) presenting with a posterior anal orifice.
- Physical examination revealed small diameter orifices (2-3 mm) located approximately 0.3-0.5 cm behind the anus.
- Diagnostic catheterization confirmed blind-ending duplicated lumens of 1.5-2 cm length.
Findings:
- Both cases were diagnosed preoperatively as ACD based on physical examination and catheterization.
- Surgical excision of the duplicated segment was performed in both patients.
- Postoperative recovery was uneventful for both infants.
Implications:
- ACD can be misdiagnosed as other anorectal conditions like hemorrhoids or fistulas.
- Despite being often asymptomatic, surgical removal of ACD is advised.
- Excision mitigates risks of inflammatory complications and potential development of adenocarcinoma.
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