[Treatment results of maxillary sinus carcinoma. A retrospective study]

The treatment results of a total of 617 cases with maxillary sinus carcinoma mainly treated by radiotherapy at the Department of Radiology, Osaka University Hospital between 1967 and 1983 were reviewed. The overall actuarial 5-year survival rate was 36.2%. The cases were divided into 3 groups by period of the treatment modalities corresponding each 5-year survival rate of 24.1% on 217 patients for 1967 to 1971, 40.0% on 155 patients for 1972 to 1975, and 44.6% on 245 patients for 1976 to 1983. The treatment results have improved in 5-year survival rate as modifying treatment modality. The actuarial 5-year local control rate was 60.0% for T1 on 9 patients, 43.1% for T2 on 181 patients, 31.7% for T3 on 246 patients, and 19.2% for T4 on 181 patients, respectively. For more detailed analysis of the results, the cases were divided into 4 groups according to the initial treatment; the group 1 was treated by radiotherapy alone (RT), the group 2 by radiotherapy combined with intra-arterial infusion of 5-fluorouracil (RT + 5-FU), the group 3 by radiotherapy combined with surgical removal of the tumor mass through curettage under the general anesthesia (RT + OP) and the group 4 by multidisciplinary procedure combined with radiotherapy, 5-FU regional infusion and curettage (RT + 5-FU + OP). In the T2 cases, the 5-year actuarial local control rate was 25.5% for RT on 51 patients, 45.0% for RT + 5-FU on 55 patients, 58.2% for RT + OP on 23 patients and 51.5% for RT + 5-FU + OP on 52 patients, respectively. In the T3 cases, the rate was 13.2% for RT on 85 patients, 33.6% for RT + 5-FU on 78 patients, 52.3% for RT + OP on 31 patients and 45.9% for RT + 5-FU + OP on 52 patients, respectively. In the T4 cases, the rate was 7.6% for RT on 77 patients, 27.2% for RT + 5-FU on 52 patients, 17.8% for RT + OP on 20 patients and 31.5% for RT + 5-FU + OP on 32 patients, respectively. The combination therapy with 5-FU regional infusion and/or curettage had successfully improved the local control rate. On the T2 and T3 cases of RT + OP, an additive effect of 5-FU infusion was not significant, and also on the T4 cases of RT + 5-FU, any usefulness of curettage could not be found.(ABSTRACT TRUNCATED AT 400 WORDS)