title: Isolated pyogenic pancreatic abscess mimicking a neoplasm.
abstract: BACKGROUND
  Pancreatic abscesses are uncommon and usually occur in the setting of pancreatitis. Isolated pyogenic pancreatic abscesses without any precipitating events are extremely rare.
  
  
  METHODS
  A 72-year-old man with a two month history of non-specific abdominal discomfort, distension, anorexia and weight loss was admitted for further evaluation. A computer tomography scan showed a lesion of the pancreatic head suspicious for a malignancy. Unexpectedly, Klebsialla pneumoniae was isolated from the aspiration biopsy without any evidence of malignancy. A repeat CT scan four months later showed resolution of the abscess after a six week course of antibiotic.
  
  
  CONCLUSIONS
  Our case highlights a rare case of isolated pyogenic pancreatic abscess secondary to Klebsialla pneumoniae mimicking an underlying pancreatic malignancy. Infective causes should be considered to avoid any unnecessary major surgery.
authors.affiliation: Gastroenterology Unit, Department of Medicine, Raja Isteri Pengiran Anak Saleha (RIPAS) Hospital, Bandar Seri Begawan, Brunei Darussalam. chongvuih@yahoo.co.uk
authors.forename: Vui Heng
authors.initials: VH
authors.lastname: Chong
mesh_terms: D000038:Abscess / Q000175:diagnosis*; D000368:Aged; D003937:Diagnosis, Differential; D006801:Humans; D007710:Klebsiella Infections / Q000175:diagnosis*; D007711:Klebsiella pneumoniae / Q000302:isolation & purification; D008297:Male; D010182:Pancreatic Diseases / Q000175:diagnosis*; D010190:Pancreatic Neoplasms / Q000175:diagnosis*; D013492:Suppuration / Q000175:diagnosis