Patient characteristics
| Depth of tumour invasion | Total | ||||
|---|---|---|---|---|---|
| pM | pSM | pMP | pAd+Adjd | ||
| Number of patients | 19 | 34 | 18 | 42 | 113 |
| Location of the lesion | |||||
| Proximal (Ce-Ut) | 0 | 5 | 2 | 7 | 14 |
| Middle (Mt) | 12 | 19 | 9 | 20 | 60 |
| Distal (Lt-Ae) | 7 | 10 | 7 | 15 | 39 |
| Macroscopic findings | |||||
| Superficial type | 19 | 34 | 0 | 0 | 53 |
| Protruding type | 0 | 0 | 4 | 2 | 6 |
| Ulcerative and localised type | 0 | 0 | 12 | 27 | 39 |
| Ulcerative and infiltrating type | 0 | 0 | 2 | 11 | 13 |
| Diffusely infiltrating type | 0 | 0 | 0 | 2 | 2 |
| Lymph node metastasis | |||||
| Positive | 0 | 16 | 8 | 30 | 54 |
| Negative | 8 | 18 | 10 | 12 | 48 |
| Therapy | |||||
| EMR | 11 | 0 | 0 | 0 | 11 |
| Operation | 8 | 34 | 18 | 42 | 102 |
p, pathological findings; M, tumour invades mucosa; SM, tumour invades submucosa; MP, tumour invades musclaris propria; Ad+Adj, tumour invades adventitia or adjacent structures.
Ce, cervical oesophagus; Ut, upper thoracic esophagus; Mt, middle thoracic oesophagus; Lt, lower thoracic esophagus; Ae, abdominal oesophagus.
EMR, endoscopic mucosal resection.