Diagnosis of Distal Cholangiocarcinoma after the Removal of Choledocholithiasis

Table 3

Radiologic findings.

	Group A	Group B	𝑃 value
	𝑛=9	𝑛=37
US
Normal	3	7	0.083
Dilatation	4	12
Tumor	0	15
CT
Normal	6	6	0.003
Dilatation	3	9
Tumor	0	20
ERCP
Normality	2	4	0.597
Abnormality	7	28
IDUS
Normality	0	1	1.000
Tumor	8	29