title: Accuracy of Endoscopic Ultrasound-guided Fine Needle Aspiration in Diagnosing Solid Pseudopapillary Tumor.
abstract: BACKGROUND
  Solid pseudopapillary tumors are rare pancreatic tumors. Accurate preoperative diagnosis helps in planning of the surgery.
  
  
  OBJECTIVE
  This study was to evaluate accuracy of endoscopic ultrasound-guided fine needle aspiration and immunohistochemistry in diagnosing solid pseudopapillary tumors.
  
  
  METHODS
  A retrospective review was performed by reviewing medical records to identify patients treated for solid pseudopapillary tumors over a 5-year period. Patients who were noted to have pancreatic lesions by computer tomography abdomen underwent endoscopic ultrasound. Fine needle aspiration was obtained from each of these lesions and subjected to immunohistochemistry.
  
  
  RESULTS
  Five patients were identified. Endoscopic ultrasound was able to identify the pancreatic lesions in all five patients noted in computer tomography abdomen. Solid pseudopapillary tumors were diagnosed by immunohistochemistry. All five patients underwent surgery and the resected lesions confirmed solid pseudopapillary tumors in 80% patients.
  
  
  CONCLUSIONS
  Endoscopic ultrasound-guided fine needle aspiration has a higher degree of accuracy in diagnosing solid pseudopapillary tumors.
authors.affiliation: Department of Gastroenterology, University of Kansas Medical Center, 3901 Rainbow Boulevard, Kansas City, KS-66106, USA.
authors.forename: Shreyas
authors.initials: S
authors.lastname: Saligram
authors.affiliation: Department of Gastroenterology, University of Kansas Medical Center, 3901 Rainbow Boulevard, Kansas City, KS-66106, USA.
authors.forename: Fang
authors.initials: F
authors.lastname: Fan
authors.affiliation: Department of Gastroenterology, University of Kansas Medical Center, 3901 Rainbow Boulevard, Kansas City, KS-66106, USA.
authors.forename: Melissa
authors.initials: M
authors.lastname: Oropeza-Vail
authors.affiliation: Department of Gastroenterology, University of Kansas Medical Center, 3901 Rainbow Boulevard, Kansas City, KS-66106, USA.
authors.forename: Parviz
authors.initials: P
authors.lastname: Gholami
authors.affiliation: Department of Gastroenterology, University of Kansas Medical Center, 3901 Rainbow Boulevard, Kansas City, KS-66106, USA.
authors.forename: Mojtaba
authors.initials: M
authors.lastname: Olyaee
keywords: Endoscopic ultrasound; fine needle aspiration; immunohistochemistry; solid pseudopapillary tumor