Academy of Medical Sciences of I.R. Iran Archives of Iranian Medicine 1029-2977 19 11 2016 11 01 Intra-pancreatic Accessory Spleen Mimicking Pancreatic Neuroendocrine Tumor on 68-Ga-Dotatate PET/CT 0 0 EN Erdal Birol Bostancı Volkan Oter Sarper Okten Nuriye Ozlem Küçük Cigdem Soydal Nesrin Turhan Musa Akoglu Journal Article Neuroendocrine tumors (NETs) are rare tumors, but the incidence is increasing with new diagnostics. A 37-year-old man was admitted to our hospital for an incidental 17-mm nodule in the tail of the pancreas. PET/CT shows indeterminate mass in the pancreatic tail with enhanced uptake of 68-Ga-DOTATATE. NET was suspected and laparoscopic distal pancreatectomy was performed. Pathologic examination revealed an accessory spleen with a heterotopic location. To the best of our knowledge, this is the first IPAS case in which the positive 68-Ga-DOTATATE uptake reported in the literature. Our case showed that IPAS is one of the reasons of false positive involvement of 68-Ga-DOTATATE PET/CT. When PET/CT shows an indeterminate mass in the pancreatic tail with enhanced uptake of 68-Ga-DOTATATE, surgeons should keep IPAS in their mind for differential diagnosis to avoid false treatment.