Fischer Michael A, Donati Olivio, Heinrich Stefan, Weber Achim, Hany Thomas F, Soldini Davide, Alkadhi Hatem, Marincek Borut, Scheffel Hans
Institute of Diagnostic Radiology, University Hospital Zurich, Zurich, Switzerland.
JOP. 2010 Jan 8;11(1):49-54.
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.
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.
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.
导管内嗜酸性乳头状肿瘤是一种罕见的胰腺肿瘤，有发展为浸润性癌的可能。将其与胰腺其他囊样肿瘤，如导管内乳头状黏液性肿瘤相鉴别，对胰腺影像学检查来说是一项挑战。
我们报告一例76岁男性患者，其因胰腺导管内嗜酸性乳头状肿瘤导致无痛性黄疸。文中展示了计算机断层扫描、包括扩散加权成像的磁共振成像以及（18）F-氟脱氧葡萄糖正电子发射断层扫描的影像学表现，并讨论了影像学与病理的相关性。
胰腺导管内嗜酸性乳头状肿瘤表现为与扩张的胰管相通的囊性肿瘤，伴有导管内肿瘤结节。在正电子发射断层扫描中，导管内嗜酸性乳头状肿瘤显示出高（18）F-氟脱氧葡萄糖摄取，在包括表观扩散系数图在内的扩散加权成像中显示低扩散值，这可能是将这些罕见病变与导管内乳头状黏液性肿瘤相鉴别的一个有价值的特征
