Table 1.

Patient characteristics.

Number of patients	50
Gender (male/ female)	38/12
Mean age in years (range)	69 (49–85)
Tumour characteristics
Pathology (AC/SCC)	34/16
Tumour location (proximal/middle/distal)	8/7/35
Treatment
Chemoradiotherapy + Surgery	27
Chemoradiotherapy	23
Position verification protocol (online/offline)	5/45