title: Primary posttransplant lymphoproliferative disorder of the gallbladder in a lung transplant patient presenting with acute cholecystitis.
abstract: BACKGROUND
  Acute cholecystitis in an immunocompromised host is potentially devastating. Posttransplant lymphoproliferative disorder (PTLD) is a well described complication of immunosuppressive therapy used after solid organ transplantation; however, isolated involvement of the gallbladder has not been described.
  
  
  METHODS
  Case report format is used.
  
  
  RESULTS
  We report a case of PTLD isolated to the gallbladder, as well as histological evidence of acute cholecystitis, in a patient who presented with signs and symptoms of acute cholecystitis 1 year after single lung transplant.
  
  
  CONCLUSIONS
  PTLD can occur in the setting of acute cholecystitis and may be missed if careful pathological examination is not undertaken.
authors.affiliation: Department of Medicine, University of Maryland School of Medicine, Baltimore 21201, USA.
authors.forename: T
authors.initials: T
authors.lastname: Heller
authors.forename: C B
authors.initials: CB
authors.lastname: Drachenberg
authors.forename: J B
authors.initials: JB
authors.lastname: Orens
authors.forename: G T
authors.initials: GT
authors.lastname: Fantry
mesh_terms: D000208:Acute Disease; D000368:Aged; D002764:Cholecystitis / Q000175:diagnosis / Q000209:etiology*; D003937:Diagnosis, Differential; D006801:Humans; D016867:Immunocompromised Host; D016040:Lung Transplantation / Q000009:adverse effects* / Q000276:immunology; D008232:Lymphoproliferative Disorders / Q000175:diagnosis / Q000209:etiology*; D008297:Male