[2,450MHz hyperthermia for malignant stenosis of the bile duct--development of a new biliary drainage tube united with a thermocouple].

We have developed new biliary drainage tubes (10 Fr and 12 Fr size) united with a thermocouple, through which we could apply 2,450MHz hyperthermia more exactly monitoring the tissue temperature in 3 cases with biliary obstruction than intracatheter hyperthermia methods already reported. One patient was discharged asymptomatic without jaundice after the removal of the drainage tube.