Table 3. Characteristics of the patients with extrahepatic bile duct carcinoma.

Characteristic	N (%)
Patients with adenocarcinoma as microscopic morphology	53
Method and site of microscopic diagnosis
Histology of primary tumor	20 (37.7)
Cytology of primary tumor	24 (45.3)
Histology of metastatic lesion	2 (3.77)
Cytology of metastatic lesion	7 (13.2)
Age (years)
20-29	1 (1.9)
30-39	2 (3.77)
40-49	20 (37.7)
50-59	12 (22.6)
60-69	10 (18.9)
70-79	6 (11.3)
>80	2 (3.77)
Gender
Male	30 (56.6)
Female	23 (43.4)
Disease extent at presentation
Localized	4 (7.55)
Locoregional	32 (60.4)
Distant metastasis	15 (28.3)
Information not available	2 (3.77)
Subsite
Perihilar	38 (71.7)
Distal	6 (11.3)
Unspecified	9 (17)