« September 2011

• Small Serotonin-Producing Neuroendocrine Tumor of the Pancreas Associated With Pancreatic Duct Obstruction

  AJR: 197, September 2011
  
  Satomi Kawamoto, Chanjuan Shi, Ralph H. Hruban, Michael A. Choti, Richard D. Schulick, Elliot K. Fishman, Stanley S. Siegelman
  
  OBJECTIVE. Pancreatic neuroendocrine tumors expressing serotonin (carcinoid tumors) account for a small portion of pancreatic neuro­endocrine tumors. The purpose of this study was to describe cases of small serotonin-producing pancreatic neuroendocrine tumors associated with pancreatic duct obstruction.
  
  CONCLUSION. Serotonin produced by pancreatic neuroendocrine tumors can induce fibrosis and pancreatic duct obstruction. Pancreatic neuroendocrine tumors should be considered when CT shows a small hypervascular mass associated with upstream pancreatic duct dilatation or atrophy. Evidence of small pancreatic neuroendocrine tumors should be sought in cases of idiopathic pancreatic duct stenosis.
  
  CONCLUSION. Left atrial volume, function, and diameter normalized to age, sex, and body surface area can be reported from CTA datasets and may provide information impor­tant for patient care.