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| Clinical features | (n=30) |
|---|---|
| Median age (range, years) | 59.0 (39–75) |
| Gender, male (%) | 28 (93) |
| Coexisting medical conditions | No. (%) |
| Smoking | 22 (73) |
| Hypertension | 20 (67) |
| Diabetes mellitus | 2 (7) |
| Intra-abdominal cancer | 0 (0) |
| Symptom | |
| Abdominal pain | 16 (53) |
| Tarry stool | 3 (10) |
| Asymptomatic | 14 (47) |
