Table 1 Patient and treatment characteristics (of the patients undergoing combined chemoradiotherapy)

Age (median: 59, range: 46–65 years)

 < 60 years

9 (53)

 ≥ 60 years

8 (47)

Sex

 Male

13 (77)

 Female

4 (23)

Clinical T stage

 T3 N0

4 (24)

 T3 N1

12 (70)

 T4 N1

1 (6)

Pretreatment metabolic tumor volume

 Median 33.2 ml (range: 4.5–195.3 ml)

Pretreatment SUV_max

 Median 13.7 (range: 2.8–20.9)

Postinduction SUV_max

 Median 2.95 (range: 2.2–12.4)

Metabolic response (SUV_{max[post-induction]}/SUV_{max[pretreatment]})

 Median 0.39 (range: 0.1–1.3)

Response to ICT

 Responders

12 (71)

 Non-responders

5 (29)

Concurrent chemoradiation

 Complete response

9 (56)

 Evidence of disease

7 (44)

Physical dose

 < 66 Gy

9 (56)

 ≥ 66 Gy

7 (44)