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| Endoscopic findings | Frequency | Percentage |
| Normal | 11 | 27.5 |
| Duodenal fissuring | 14 | 35.0 |
| Decreased height of duodenal folds | 1 | 2.5 |
| Duodenal fissuring x Decreased height of duodenal folds | 3 | 7.5 |
| Duodenal fissuring x Decreased number of duodenal folds | 4 | 10.0 |
| Decreased height of duodenal folds x Decreased number of duodenal folds | 4 | 10.0 |
| Duodenal Fissuring x Decreased height of duodenal folds x Decreased number of duodenal folds | 2 | 5.0 |
| Failed to mention | 1 | 2.5 |
