Porfimer sodium Unknown Status Phase 3 Trials for Stage III Esophageal Squamous Cell Carcinoma / Stage II Esophageal Adenocarcinoma / Stage I Esophageal Squamous Cell Carcinoma / Stage III Esophageal Adenocarcinoma / Stage I Esophageal Adenocarcinoma / Stage II Esophageal Squamous Cell Carcinoma Treatment