Number(%)
Sex Women 7 (17.5)
  Men 33 (82.5)
Mean/median age  59.2/62 (DS 11.83)
Localization
  Pharynx 7(17.5)
  Larynx 18(45)
  Oral Cavity 9(22.5)
  Unknown primary 4(10)
  Others 2(5)
Histology Epidermoid 36(90)
  undifferentiated 2(5)
  Adenocarcinoma 1(2.5)
  Others 1(2.5)
T Tx 5(12.5)
  T1-2 10(30.3)
  T3-4 18(54.54)
N N0-1 19(54.28)
  N2 13(37.14)
  N3 3(8.57)
Initial Stage I 4(11.76)
  II 2(5.88)
  III 10(29.41)
  IV 18(52.94)
Radiotherapy Mean dose  65.94Gy
Toxicity Acute (>G3) 9(22.5)
  Chronicle (>G2) 2(5)
Treatment RT alone 5(12.5)
Scheme 
  Surgery and RT 13(32.5)
  RTQT 13(32.5)
  Surgery and RTQT 9(22.5)
Disease Free Interval Mean 33.5 /Median 16
Interval between treatments Mean 44.77/Median 23.5
Table 2: Characteristics of patients during the first and second radiotherapy. Features of second treatment.