[CO2 cholangiography].
OBJECTIVE
Evaluation of the benefit of carbon dioxide (CO2) as contrast medium to reduce intraductal manipulations in biliary drainage.


METHODS
In 8 patients with biliary occlusion demonstrated by cholangiography with iodinated contrast medium, percutaneous CO2 cholangiography was performed by manual injection of 30-50 ml CO2 using the same approach. Capability of CO2 to pass the obstruction and delineate distal parts of the common bile duct was evaluated.


RESULTS
In 5 of 8 patients CO2 visualised additional segments of the occluded bile duct. In 4 patients the poststenotic bile duct was demonstrated with CO2. In one patient 2 cm of the obstructed duct segment was visualised. The intrahepatic duct system could not be examined sufficiently by CO2 administration.


CONCLUSIONS
Because of its low viscosity, CO2 is a useful contrast medium to visualise the extrahepatic biliary system before performing an external-internal biliary drainage in biliary obstruction. Unnecessary intraductal manipulations may be reduced.
Textor
H J
HJ
Radiologische Universitätsklinik Bonn.
Hinterthaner
B
B
Wilhelm
K
K
Strunk
H
H
Schüller
H
H
Schild
H H
HH
D002245:Carbon Dioxide; D002758:Cholangiography / Q000379:methods*; D001651:Cholestasis, Extrahepatic / Q000000981:diagnostic imaging* / Q000601:surgery; D003137:Common Bile Duct Diseases / Q000000981:diagnostic imaging* / Q000601:surgery; D003287:Contrast Media; D004322:Drainage; D005260:Female; D006801:Humans; D007472:Iohexol / Q000031:analogs & derivatives; D008297:Male; D008875:Middle Aged
D003287:Contrast Media; D002245:Carbon Dioxide; D007472:Iohexol; C038192:iopromide