[CT findings of mucin-producing pancreatic cancer--differentiation from chronic pancreatitis].
Mucin-producing pancreatic cancers (MPPC), which include mucinous adenocarcinoma, papillary adenocarcinoma and cystadenocarcinoma, are radiographically characterized by diffuse or localized dilatation of the main pancreatic duct due to excessive mucin production. Therefore, MPPC are occasionally difficult to distinguish from chronic pancreatitis on CT unless the primary pancreatic lesion is visualized. We compared five cases of MPPC with five cases of chronic pancreatitis with marked duct dilatation to determine differences in CT images between the two diseases. There was no significant difference between the two diseases in the nature of duct dilatation (size, extent, contour) or parenchymal changes (atrophy, enlargement, calcification, cystic lesion). However, dilatation of the intramural duct was characteristically observed in MPPC but not in chronic pancreatitis. Papillary masses in the pancreatic duct, when observed, were another finding specific to MPPC.
Ri
K
K
Department of Radiology, Showa University School of Medicine.
Hashimoto
T
T
Munechika
H
H
Matsui
S
S
Gokan
T
T
Obana
K
K
Kushihashi
T
T
Kitanosono
T
T
Kubota
H
H
Hishida
T
T
D000368:Aged; D000369:Aged, 80 and over; D002908:Chronic Disease; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009077:Mucins / Q000378:metabolism*; D010190:Pancreatic Neoplasms / Q000000981:diagnostic imaging* / Q000378:metabolism; D010195:Pancreatitis / Q000000981:diagnostic imaging*; D014057:Tomography, X-Ray Computed
D009077:Mucins