title: A solid pseudopapillary neoplasm of the pancreas in a man presenting with acute pancreatitis: A case report.
abstract: BACKGROUND
  A solid pseudopapillary neoplasm (SPN) of the pancreas is rare neoplasm that occurs predominantly in young women. The clinical presentation of SPNs is nonspecific, but acute pancreatitis is rare in the reported literature.
  
  
  METHODS
  A 36-year-old man was referred to our hospital because of upper abdominal pain and elevation of serum amylase. A computed tomography (CT) scan showed swelling of the pancreas body and a poorly enhanced and indistinct mass in the pancreas body. He was diagnosed with acute pancreatitis. The symptom was improved with conservative treatment, but acute pancreatitis recurred twice during a period of 2 months. Magnetic resonance cholangiopancreatography (MRCP) and endoscopic retrograde cholangiopancreatography (ERCP) showed stenosis of the MPD adjacent to the mass. Distal pancreatectomy was performed because the mass in the pancreas body seemed to cause repeated acute pancreatitis and malignant pancreatic cancer could not be excluded. Immunohistochemically, a diagnosis of SPN of the pancreas was made from the resected specimen.
  
  
  CONCLUSIONS
  To the best our knowledge, only 6 cases have been reported in the literature concerning the SPN presenting with acute pancreatitis.
  
  
  CONCLUSIONS
  We report a man with a small SPN of the pancreas presenting with acute pancreatitis and mimicking pancreatic cancer. We should be aware that this rare pancreatic tumor can become a cause of acute pancreatitis.
authors.affiliation: Department of Surgery, Yoshida General Hospital, 3666 Yoshida, Yoshida-Chou, Akitakata City, Hiroshima, 731-0595, Japan.
authors.forename: Emi
authors.initials: E
authors.lastname: Chikuie
authors.affiliation: Department of Surgery, Chugoku Rousai Hospital, 1-5-1 Hirotagaya, Kure, Hiroshima, 737-0193, Japan. Electronic address: safukuda@aol.com.
authors.forename: Saburo
authors.initials: S
authors.lastname: Fukuda
authors.affiliation: Department of Surgery, Chugoku Rousai Hospital, 1-5-1 Hirotagaya, Kure, Hiroshima, 737-0193, Japan.
authors.forename: Hirofumi
authors.initials: H
authors.lastname: Tazawa
authors.affiliation: Department of Diagnostic Pathology, Chugoku Rousai Hospital, 1-5-1 Hirotagaya, Kure, Hiroshima, 737-0193, Japan.
authors.forename: Toshihiro
authors.initials: T
authors.lastname: Nishida
authors.affiliation: Department of Surgery, Chugoku Rousai Hospital, 1-5-1 Hirotagaya, Kure, Hiroshima, 737-0193, Japan; Faculty of Medicine, Hiroshima University, 1-2-3 Kasumi, Hiroshima, 734-8551, Japan.
authors.forename: Hideto
authors.initials: H
authors.lastname: Sakimoto
keywords: Acute pancreatitis; Pancreatic cancer; Solid pseudopapillary neoplasm