| Siewert Type |
Epicenter of the lesion |
| I |
Within 1 to 5 cm above the anatomic GEJ |
| II |
Within 1 cm above and 2 cm below the GEJ
(i.e. true carcinoma of the cardia) |
| III |
Between 2 to 5 cm below the GEJ, infiltrating GEJ and oesophagus from below
(subcardial carcinoma) |
|