title: Utility of preoperative dynamic magnetic resonance imaging of the pancreas in diagnosing tumor-forming pancreatitis that mimics pancreatic cancer: report of a case.
abstract: The differential diagnosis of pancreatic carcinoma and tumor-forming pancreatitis remains difficult, and this situation can cause serious problems because the management and prognosis of these two focal pancreatic masses are entirely different. We herein report a case of tumor-forming pancreatitis that mimics pancreatic carcinoma in an 80-year-old woman. Computed tomography showed a solid mass in the head of the pancreas, and endoscopic retrograde cholangiopancreatography showed a complete obstruction of the main pancreatic duct in the head of the pancreas. Dynamic contrastenhanced magnetic resonance imaging (MRI) demonstrated a time-signal intensity curve (TIC) with a slow rise to a peak (1 min after the administration of the contrast material), followed by a slow decline at the pancreatic mass, indicating a fibrotic pancreas. Under the diagnosis of tumor-forming pancreatitis, the patient underwent a segmental pancreatectomy instead of a pancreaticoduodenectomy. The histopathology of the pancreatic mass was chronic pancreatitis without malignancy. The pancreatic TIC obtained from dynamiccontrast MRI can be helpful to differentiate tumor-forming pancreatitis from pancreatic carcinoma and to avoid any unnecessary major pancreatic surgery.
authors.affiliation: Department of Surgery, Graduate School of Biomedical Sciences, Nagasaki University, 1-7-1 Sakamoto, Nagasaki, 852-8501, Japan.
authors.forename: Tamotsu
authors.initials: T
authors.lastname: Kuroki
authors.forename: Yoshitsugu
authors.initials: Y
authors.lastname: Tajima
authors.forename: Noritsugu
authors.initials: N
authors.lastname: Tsuneoka
authors.forename: Tomohiko
authors.initials: T
authors.lastname: Adachi
authors.forename: Takashi
authors.initials: T
authors.lastname: Kanematsu
mesh_terms: D000369:Aged, 80 and over; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D010179:Pancreas / Q000473:pathology* / Q000601:surgery; D010180:Pancreatectomy; D010190:Pancreatic Neoplasms / Q000150:complications / Q000175:diagnosis / Q000601:surgery; D010195:Pancreatitis / Q000150:complications / Q000175:diagnosis* / Q000601:surgery; D011300:Preoperative Care