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| Lesion | Frequency(n) | Percentage (%) |
| Esophageal biopsy (n=76) | ||
| Esophagitis | 18 | 23.7 |
| Dysplasia | 20 | 26.3 |
| Barett’s esophagus | 31 | 40.8 |
| Squamous cell carcinoma of the esophagus | 7 | 9.2 |
| Gastric biopsy (n=149) | ||
| Gastric ulcer | 29 | 19.5 |
| Gastritis | 74 | 49.7 |
| Normal | 8 | 5.4 |
| Squamous cell carcinoma of the stomach | 9 | 6 |
| Adenocarcinoma of the stomach | 22 | 14.8 |
| Gastric lymphoma | 7 | 4.7 |
| Duodenal biopsy (n=25) | ||
| Duodenal ulcer | 6 | 24 |
| Duodenitis | 12 | 48 |
| Adenocarcinoma duodenum | 7 | 28 |
