symptom

26 cases (40.0%)

no symptom

39 cases (60.0%)

pain

16

health examination

23 cases (35.4%)

jaundice

6

ultrasonography

13

abdominal discomfort

2

elevation of tumor marker (CA19-9)

3

weight loss

2

elevation of hepatic and biliary enzyme

2

elevation of pancreatic enzyme

2

impaired glucose tolerance

2

follow-up for other disorders

16 cases (24.6%)

diabetes

6

chronic pancreatitis

2

et al.

8