1989 Volume 92 Issue 3 Pages 414-419
From 1978 through 1984, we had 151 patients with T1NOM0 glottic carcinoma. They were treated by radiotherapy with 4MV x-ray in parallel opposing field of 5 x 5cm' or 6 x 6cm2. The total dose was 60 Gy/30 fractions/6 weeks.
The local control rate was 88.1%, the local recurrence being noted in 18 cases (11.9%). Of these 18 cases, 6 underwent partial laryngectomy, and 10 total laryngectomy. The remaining two cases died : one refused further treatment for recurrence and the other died in spite of total laryngectomy due to recurrence after partial laryngectomy. The salvage rate was 94.1%. The cummurative survival rate was 82.6% in Tla, 71.5% in Tlb and 81.1% in 151 T1NO. The tumor response was poor in the presence of lesion occupying the whole length of the vocal cord. Also, in the cases with ulcer formation or thickened vocal cord as seen on laryngogram, local control rate was not good.
Better results will be achieved by improving treatment techniques, specially by improving dosedistribution by wedge-filtered technique and method for immobilization in plastic shell during radiotherapy.
