title: Magnetic resonance cholangiopancreatography for postoperative follow-up of intraductal papillary-mucinous tumors of the pancreas.
abstract: BACKGROUND
  After resection of an intraductal papillary-mucinous tumor (IPMT), benign tumors or portions of the resected tumor are sometimes left in place to avoid total pancreatectomy. We evaluated the role of magnetic resonance cholangiopancreatography (MRCP) in postoperative follow-up.
  
  
  METHODS
  Twenty-two patients underwent MRCP 0.5 to 6.5 years after pancreatic resection for IPMT.
  
  
  RESULTS
  Two patients with surgical margin involvement of the main pancreatic duct showed mildly enhanced ductal dilatation due to anastomotic stenosis. In 4 patients with residual IPMT of the branch ducts, postoperative MRCP demonstrated no changes. MRCP revealed new IPMT 1 year after surgery in 1 patient. No patients showed intraductal or intracystic mural nodules postoperatively. In 3 patients with postoperative pancreatitis or recurrent abdominal discomfort, MRCP demonstrated ductal dilatation and poor secretin-stimulated pancreatic secretion into the gastrointestinal tract, which suggested pancreatoenterostomic stenosis.
  
  
  CONCLUSIONS
  MRCP is useful for postoperative follow-up of IPMT, in terms of investigating residual or recurrent IPMT and evaluating postpancreatectomy long-term complications.
authors.affiliation: First Department of Surgery, Kyorin University School of Medicine, 6-20-2 Shinkawa, Mitaka, Tokyo 181-8611, Japan. sgym@kyorin-u.ac.jp
authors.forename: Masanori
authors.initials: M
authors.lastname: Sugiyama
authors.forename: Nobutsugu
authors.initials: N
authors.lastname: Abe
authors.forename: Makoto
authors.initials: M
authors.lastname: Tokuhara
authors.forename: Tadahiko
authors.initials: T
authors.lastname: Masaki
authors.forename: Toshiyuki
authors.initials: T
authors.lastname: Mori
authors.forename: Taro
authors.initials: T
authors.lastname: Takahara
authors.forename: Junichi
authors.initials: J
authors.lastname: Hachiya
authors.forename: Yutaka
authors.initials: Y
authors.lastname: Atomi
mesh_terms: D000368:Aged; D001659:Biliary Tract / Q000473:pathology*; D021441:Carcinoma, Pancreatic Ductal / Q000473:pathology / Q000601:surgery; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D009364:Neoplasm Recurrence, Local / Q000175:diagnosis; D018365:Neoplasm, Residual; D010179:Pancreas / Q000473:pathology*; D010180:Pancreatectomy; D010183:Pancreatic Ducts / Q000473:pathology*; D010190:Pancreatic Neoplasms / Q000175:diagnosis / Q000473:pathology / Q000601:surgery*; D011183:Postoperative Complications / Q000175:diagnosis