We examined postoperative survival results of 87 cases of hepatohilar bile duct carcinoma that underwent surgical resection in terms of the macroscopic type, histological type, degree of microscopic tumor invasion to the vessels and nerves, degree of extension surrounding the bile duct (t-category), comprehensive stage and comprehensive curability (cur). For t-category in differ ent histological types, total cases of t
1 and t
2 were as high as 62 % and 67 % in cases of pap and tub,; cases of t
1 included pap (54 %) tub
1 (20 %), tub
2, (3 %) and tub
3(0 %). For the proportion of comprehensive stages in different histological types, cases of stage I were frequent in pap and tuba cases, and cases of stage IV were frequent in tub
2 and tub
3 cases. This may be attributed to the fact that cancerous infiltration to the bile duct wall was frequent in tub
2-3 cases and intraluminal -expansive growth was observed and symptoms developed earlier due to biliary obstruc tion in pap cases. In pap and tubs
1 cases, there were macroscopic cases of expanded papillary type in as many as five of 13 cases (38 %) and those of expanded nodular type in as many as five of 15 cases (33 %), respectively, while in tub
2 and tub
3 cases, there were as many as 84 % and 93 % of cases of macroscopic invasive type including the papillary invasive type, the nodular invasive type and the flat invasive type, respectively. Thus, 'histological types may be conjectured from macroscopic types. Non-resection multidisciplinary treatment should be provided for cases where the stromal invasion surrounding the bile duct is remarkable and the hepatoduodenal ligament is expected to have a stick-like shape as a result of cancer-invasion to the hepatoduodenal ligament through various pre-operative diagnostic irnagings; aggressive extended radical operation satisfying cur A should be provided for cases where intraluminal growth is significant to achieve long-term survival. Thus, it may be important in terms of medical economics also to adopt a rational treatment system.
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