title: Neuroendocrine tumor of the gallbladder.
abstract: BACKGROUND
  The primary neuroendocrine tumors of the gallbladder are very rare, representing 0.2% of all neuroendocrine tumors. The definite diagnosis is incidental in most cases.
  
  
  METHODS
  A 60-year-old male patient presented with a one-month history of epigastric pain and jaundice, itching, flushing, cough and wheezing. Ultrasound demonstrated the gallbladder containing multiple stones, with wall thickening and an adjacent liver lesion. Additionally, those structures showed noticeable contrast enhancement in CT and MRI. Histopathological examination revealed a primary gallbladder neuroendocrine tumor.
  
  
  CONCLUSIONS
  Though a rare entity, primary neuroendocrine tumor should be considered in the differential diagnosis of gallbladder cancers.
authors.affiliation: Department of Clinical Imaging, Hamad General Hospital, Hamad Medical Corporation, Doha, Qatar.
authors.forename: Ahmed
authors.initials: A
authors.lastname: Monier
authors.affiliation: Department of Clinical Imaging, Hamad General Hospital, Hamad Medical Corporation, Doha, Qatar.
authors.forename: Nehal
authors.initials: N
authors.lastname: Saloum
authors.affiliation: Department of Clinical Imaging, National Center for Cancer Care and Research, Hamad Medical Corporation, Doha, Qatar.
authors.forename: Wojciech
authors.initials: W
authors.lastname: Szmigielski
authors.affiliation: Department of Clinical Imaging, Hamad General Hospital, Hamad Medical Corporation, Doha, Qatar.
authors.forename: Amal
authors.initials: A
authors.lastname: Alrashid
authors.affiliation: Department of Laboratory Medicine and Pathology, Hamad General Hospital, Hamad Medical Corporation, Doha, Qatar.
authors.forename: Sarbar M E
authors.initials: SM
authors.lastname: Napaki
keywords: Diagnosis; Gallbladder Neoplasms; Magnetic Resonance Imaging; Multidetector Computed Tomography; Neuroendocrine Tumors; Ultrasonography