Nine (1.66%) out of 542 cases of HCC treated surgically in our hospital between 1985 and 1992, had macroscopic bile duct thrombi. Three cases presented preoperatively with obstructive jaundice. Two of these received thrombectomy in the hilar bile duct and died of hepatic insufficiency on postoperative days 10 and 66, the other case underwent extended left lobectomy, but also died of renal failure and sepsis 3 months after the operation. In addition, we also treated 6 cases diagnosed at earlier stages than those presenting with obstructive jaundice with both hepatectomy and thrombectomy. In these patients the outcome was as follows: 2 died of recurrent HCC 3 months and 16 months, respectively, after operation, 1 died of apoplexy with no recurrence after 19 months, 1 had a recurrence 5 months after the operation, but is still alive after 7 months, and 2 are still alive 24 months and 60 months after surgery with no recurrence. The outcome is still poor in our series with obstructive jaundice. But in this report, we propose radical surgical treatment for HCC with bile duct thrombi in accordance with our classification, especially for those cases without obstructive jaundice.