CT diagnosis of intraductal papillary neoplasm of the pancreas in comparison with histopathologic findings.
CONCLUSIONS
The existence of excrescent nodules in the cystic component of intraductal papillary neoplasms (IPN) on computed tomography (CT) is useful for differentiating between malignant and benign lesions.


BACKGROUND
We sought to evaluate the ability of CT to differentiate malignant from benign lesions in IPN of the pancreas.


METHODS
CT findings in 20 cases of IPN (11 benign and 9 malignant lesions) were compared with histopathological findings from subsequent surgery.


RESULTS
The size of the cystic portion on CT did not correlate with the malignant potential of the lesion. Seven (78%) of 9 malignant lesions had excrescent nodules on CT, whereas 1 (9%) of 11 benign lesions did.
Kyokane
T
T
Department of Diagnostic Radiology, National Cancer Center Hospital, Tokyo, Japan.
Furukawa
H
H
Takayasu
K
K
Mukai
K
K
Shimada
K
K
Kosuge
T
T
Ushio
K
K
D000236:Adenoma / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology; D000368:Aged; D002285:Carcinoma, Intraductal, Noninfiltrating / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology; D005260:Female; D006651:Histocytochemistry; D006801:Humans; D008297:Male; D008875:Middle Aged; D010190:Pancreatic Neoplasms / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology; D012189:Retrospective Studies; D014057:Tomography, X-Ray Computed