title: Carcinoma arising in a pharyngeal pouch previously treated by endoscopic stapling.
abstract: OBJECTIVE
  A case is described in which squamous cell carcinoma was found during surgery for a recurrent pharyngeal pouch previously treated by endoscopic stapling. A search of the English language literature suggests this is the first reported case of a carcinoma developing in a pharyngeal pouch previously treated by endoscopic stapling.
  
  
  METHODS
  Case report and literature review.
  
  
  METHODS
  The records of a patient who presented with a recurrent pharyngeal pouch after a previous endoscopic stapling procedure were reviewed. The presentation, imaging, and histopathologic findings are presented and the implications of these discussed.
  
  
  RESULTS
  Imaging confirmed a recurrent pharyngeal diverticulum. An endoscopic assessment revealed the presence of tumor in the recurrent pouch that histopathologic evaluation confirmed to be squamous cell carcinoma. The patient underwent an external excision of this diverticulum followed by a course of external beam radiotherapy.
  
  
  CONCLUSIONS
  This is the first reported case of a carcinoma developing in a recurrent pharyngeal diverticulum previously treated by endoscopic stapling and brings to light a rare risk of endoscopic stapling procedures for the treatment of pharyngeal diverticula.
authors.affiliation: Department of Otorhinolaryngology-Head and Neck Surgery, Queen's Medical Centre, Nottingham University Hospitals NHS Trust, Nottingham, United Kingdom. aanandacharya@hotmail.com
authors.forename: Aanand
authors.initials: A
authors.lastname: Acharya
authors.forename: Stephen
authors.initials: S
authors.lastname: Jennings
authors.forename: Susan
authors.initials: S
authors.lastname: Douglas
authors.forename: Showkat
authors.initials: S
authors.lastname: Mirza
authors.forename: Nigel
authors.initials: N
authors.lastname: Beasley
mesh_terms: D000368:Aged; D002294:Carcinoma, Squamous Cell / Q000209:etiology* / Q000473:pathology; D004724:Endoscopy; D006801:Humans; D008297:Male; D010610:Pharyngeal Neoplasms / Q000209:etiology* / Q000473:pathology; D012008:Recurrence; D017792:Surgical Stapling / Q000009:adverse effects; D016672:Zenker Diverticulum / Q000150:complications* / Q000601:surgery*