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Table 1 Patient characteristics

From: Detection of interfraction displacement and volume variance during radiotherapy of primary thoracic esophageal cancer based on repeated four-dimensional CT scans

Characteristic Number
Sex, n (%)  
M 26 (81.3%)
F 6 (18.7%)
Age, median, y (range) 71 (45–89)
Tumor histology, n (%)  
Squamous cell carcinoma 25 (78.1%)
Adenocarcinoma 7 (19.9%)
Disease stage, n (%)  
I 6 (18.8%)
II 12 (37.5%)
III 5 (15.6%)
IV 9 (28.1%)
Tumor location, n (%)  
Upper 9 (28.1%)
Mid- 14 (43.8%)
Distal 9 (28.1%)