title: Ectopic splenic tissues mimicking gastro-intestinal stromal tumour in a patient after splenectomy for a giant epithelial cyst of spleen: A case report.
abstract: BACKGROUND
  Ectopic splenic tissues left after a previous splenectomy can masquerade as a gastro-intestinal stromal tumour (GIST).
  
  
  METHODS
  Splenectomy was carried out for a 17-year-old girl with a giant epithelial cyst of spleen. Four years later, an upper endoscopy carried out for dyspepsia revealed two sub-mucosal lesions at the posterior wall of the gastric fundus. Computed tomography diagnosed a GIST. At operation, a dump-bell shaped extragastric mass was excised. Histology showed normal splenic tissues.
  
  
  CONCLUSIONS
  Giant epithelial cyst of spleen is rare. It is even rarer for ectopic splenic tissues left after splenectomy to masquerade as a GIST.
  
  
  CONCLUSIONS
  Ectopic splenic tissues should be included as a differential diagnosis in a patient who has a history of splenectomy presenting with a sub-mucosal gastric tumour.
authors.affiliation: Department of Surgery, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong Special Administrative Region.
authors.forename: Kam Man
authors.initials: KM
authors.lastname: Chung
authors.affiliation: Department of Surgery Queen Elizabeth Hospital, Kowloon, Hong Kong Special Administrative Region.
authors.forename: Hiu Yan Stephanie
authors.initials: HY
authors.lastname: Lau
authors.affiliation: Faculty of Medicine, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong Special Administrative Region. Electronic address: josephlau@cuhk.edu.hk.
authors.forename: Wan Yee
authors.initials: WY
authors.lastname: Lau
keywords: GIST; Splenectomy; Splenic giant epithelial cyst