Intraductal oncocytic papillary neoplasm of the pancreas: a radio-pathological case study.
BACKGROUND
An intraductal oncocytic papillary neoplasm is a rare pancreatic tumor with the potential of developing invasive carcinoma. Its differentiation from other cystic-like neoplasms of the pancreas, such as intraductal papillary mucinous neoplasms, is a challenge for pancreatic imaging.


METHODS
We present the case of a 76-year-old male with painless jaundice caused by an intraductal oncocytic papillary neoplasm of the pancreas. The imaging findings on computed tomography, magnetic resonance including diffusion-weighted imaging, and (18)F-fluorodeoxyglucose positron emission tomography are presented and the radio-pathological correlations are discussed.


CONCLUSIONS
An intraductal oncocytic papillary neoplasm of the pancreas appears as a cystic tumor communicating with the dilated pancreatic duct featuring intraductal tumor nodules. Intraductal oncocytic papillary neoplasms show a high (18)F-fluorodeoxyglucose-uptake in positron emission tomography and low diffusion values in diffusion-weighted imaging including apparent diffusion coefficient maps which may be a valuable attribute in distinguishing these rare lesions from intraductal papillary mucinous neoplasms.
Fischer
Michael A
MA
Institute of Diagnostic Radiology, University Hospital Zurich, Zurich, Switzerland.
Donati
Olivio
O
Heinrich
Stefan
S
Weber
Achim
A
Hany
Thomas F
TF
Soldini
Davide
D
Alkadhi
Hatem
H
Marincek
Borut
B
Scheffel
Hans
H
D000368:Aged; D021441:Carcinoma, Pancreatic Ductal / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D002291:Carcinoma, Papillary / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D019788:Fluorodeoxyglucose F18; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D010190:Pancreatic Neoplasms / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D015898:Tomography Scanners, X-Ray Computed; D014055:Tomography, Emission-Computed / Q000379:methods; D014463:Ultrasonography
D019788:Fluorodeoxyglucose F18