Table 3. Pathological characteristics of the 76 GBC.

Pathological classification	Number (%)
Histologic type
Well differentiated	3 (3.9)
Moderately differentiated	60 (79.0)
Poorly differentiated	13 (17.1)
Tumor location
gallbladder neck	31 (40.8)
gallbladder body	24 (31.6)
gallbladder fundus	21 (27.6)
Tumor extension
Hepatic invasion	40 (52.6)
Lymphatic invasion	45 (59.2)
Extrahepatic bile duct invasion	31 (40.8)
Vascular invasion	2(2.6)
Stage (UICC)
Early (stage I and II)	9 (11.8)
Advanced (stage III, IV)	67 (88.2)