Dynamic MRI using a surface coil in chronic cholecystitis and gallbladder carcinoma: radiologic and histopathologic correlation.
OBJECTIVE
The purpose of this study was to determine whether dynamic MRI could differentiate gallbladder carcinoma from chronic cholecystitis.


METHODS
The dynamic MR findings of 50 patients with pathologically proven chronic cholecystitis and 13 with gallbladder carcinomas were correlated with the pathological findings.


RESULTS
In chronic cholecystitis with thickened wall, mucosa and muscle were shown in early images as smoothly delineated enhancement except in one case, and the subserosa with fibrosis was enhanced in late or delayed images. Unenhanced foci in the wall correlated with Rokitansky-Aschoff sinuses or mural stones. In carcinomas, all tumors showed irregularly delineated enhancement in early images. In late or delayed images, noncancerous portions were also enhanced. The outer margin of early enhancement correlated with the extension of the tumor.


CONCLUSIONS
Dynamic MRI is useful for the differentiation of chronic cholecystitis from carcinoma and for the evaluation of its local extension.
Demachi
H
H
Department of Radiology, Toyama Prefectural Central Hospital, Japan.
Matsui
O
O
Hoshiba
K
K
Kimura
M
M
Miyata
S
S
Kuroda
Y
Y
Konishi
K
K
Tsuji
M
M
Miwa
A
A
D000328:Adult; D000368:Aged; D002277:Carcinoma / Q000175:diagnosis* / Q000473:pathology; D002764:Cholecystitis / Q000175:diagnosis* / Q000473:pathology; D002908:Chronic Disease; D003287:Contrast Media; D003937:Diagnosis, Differential; D004338:Drug Combinations; D005260:Female; D005682:Gadolinium; D019786:Gadolinium DTPA; D005704:Gallbladder / Q000473:pathology; D005706:Gallbladder Neoplasms / Q000175:diagnosis* / Q000473:pathology; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000295:instrumentation / Q000379:methods*; D008297:Male; D008536:Meglumine; D008875:Middle Aged; D009942:Organometallic Compounds; D004369:Pentetic Acid / Q000031:analogs & derivatives; D012189:Retrospective Studies
D003287:Contrast Media; D004338:Drug Combinations; D009942:Organometallic Compounds; D008536:Meglumine; D004369:Pentetic Acid; D005682:Gadolinium; D019786:Gadolinium DTPA