title: Granulocytic sarcoma of the pancreas on 18F-FDG PET/CT: A case report.
abstract: BACKGROUND
  Granulocytic sarcoma (GS) is defined as leukemia infiltration in any organ other than the bone marrow. GS rarely occurs in the pancreas. Here, we present the first report of GS in the pancreas on F-fluorodexyglucose positron emission tomography/computed tomography (F-FDG PET/CT).
  
  
  METHODS
  A 19-year-old male patient with acute myeloid leukemia received a human leukocyte antigen-haploidentical stem cell transplant as a second transplant while in second complete remission.
  
  
  METHODS
  After a second stem cell transplant, obstructive pancreatitis accompanied by a mass in the pancreatic head was observed. FDG-PET/CT revealed abnormal activity in the head of the pancreas and the skin in the patient's left breast area.
  
  
  METHODS
  Pathological examination demonstrated relapsed acute myeloid leukemia in both the lesions.
  
  
  RESULTS
  This is the first report showing the F-FDG PET/CT findings of GS in the pancreas.
  
  
  CONCLUSIONS
  F-FDG PET/CT may help determine the stage of GS.
authors.affiliation: Departments of Hematology and Oncology Diagnostic Imaging and Nuclear Medicine, Graduate School of Medicine, Kyoto University, Kyoto, Japan.
authors.forename: Akira
authors.initials: A
authors.lastname: Ishii
authors.forename: Tadakazu
authors.initials: T
authors.lastname: Kondo
authors.forename: Tomomi
authors.initials: T
authors.lastname: Oka
authors.forename: Yuji
authors.initials: Y
authors.lastname: Nakamoto
authors.forename: Akifumi
authors.initials: A
authors.lastname: Takaori-Kondo
mesh_terms: D000971:Antineoplastic Combined Chemotherapy Protocols / Q000008:administration & dosage*; D001707:Biopsy, Needle; D019788:Fluorodeoxyglucose F18; D006801:Humans; D007150:Immunohistochemistry; D015470:Leukemia, Myeloid, Acute / Q000175:diagnosis / Q000628:therapy; D008297:Male; D009361:Neoplasm Invasiveness / Q000473:pathology; D009367:Neoplasm Staging; D010190:Pancreatic Neoplasms / Q000000981:diagnostic imaging* / Q000188:drug therapy / Q000473:pathology; D000072078:Positron Emission Tomography Computed Tomography / Q000379:methods*; D016879:Salvage Therapy; D023981:Sarcoma, Myeloid / Q000175:diagnosis* / Q000188:drug therapy / Q000473:pathology; D033581:Stem Cell Transplantation / Q000379:methods; D055815:Young Adult
chemical_list: D019788:Fluorodeoxyglucose F18