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Rectal duplication cyst in an adult with a history of imperforate anus: a diagnostic challenge
  1. Sofia Cavadas,
  2. Eduarda Gonçalves,
  3. Carlos Costa-Pereira and
  4. Joaquim Costa-Pereira
  1. General Surgery, Hospital de Braga, Braga, Portugal
  1. Correspondence to Dr Sofia Cavadas; anasofiacavadas{at}


Rectal duplications are rare congenital anomalies that represent 1%–6% of alimentary tract duplications. We report a case of a woman in her 50s who presented to our hospital with perianal pain and urinary retention. She had a history of imperforate anus repaired after birth and dynamic graciloplasty performed during her adulthood for faecal incontinence. Abdominal CT scan showed a fluid collection extending from the electrostimulator, placed in a subcutaneous pocket in the abdomen, to the rectouterine pouch. Infection related to the electrostimulator was assumed and, after a course of antibiotics without patient improvement, the electrostimulator was removed. The symptoms and the pelvic fluid collection persisted, and diagnostic laparoscopy was performed. Diagnosis of rectal duplication cyst was made intraoperatively, and the cyst was completely resected. Patient fully recovered after surgery. This is a rare case of a rectal duplication cyst presenting during adulthood and associated with imperforate anus.

  • gastrointestinal surgery
  • surgery
  • general surgery

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  • Contributors SC and EG conceived the study, collected the data, made the bibliographic research and wrote the manuscript. CC-P contributed to the bibliographic research. CC-P and JC-P reviewed the manuscript. All the authors gave their final approval of the version to be published.

  • Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.

  • Case reports provide a valuable learning resource for the scientific community and can indicate areas of interest for future research. They should not be used in isolation to guide treatment choices or public health policy.

  • Competing interests None declared.

  • Provenance and peer review Not commissioned; externally peer reviewed.