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Efficacy of high-dose-rate interstitial brachytherapy in patients with oral tongue carcinoma.

Abstract：

PURPOSE:To evaluate the results of high-dose-rate (HDR)-interstitial brachytherapy (ISBT) in oral tongue carcinomas. METHODS AND MATERIALS:Between September 1999 and August 2007, 50 patients were treated for oral tongue carcinoma with HDR-ISBT. The patient's mean age was 58 years. Forty-two patients were in T1-2 stage and 8 patients were in T3 stage; 16 patients were in N+ stage and 34 patients in N0 stage. Exclusive ISBT was given to 17 patients (34%) in T1-2 N0 stage and complementary to external beam radiotherapy (EBRT) to 33 patients (66%). A perioperative technique was performed on 14 patients. The median total dose was 44 Gy when HDR was used alone (4 Gy per fraction) and 18 Gy when complementary to 50 Gy EBRT (3 Gy per fraction). RESULTS:The median followup was 44 months. Actuarial disease-free survival rates at 3 and 5 years were 81% and 74%, respectively. Local failure developed in 7 patients. Actuarial local control (LC) rates were 87% and 79% at 3 and 5 years in T1-2 stage 94.5% and 91% and T3 stage 43% and 43% (with salvage surgery). Exclusive HDR cases showed LC in 100% of the cases, and the combined group (EBRT+HDR) showed LC in 80% and 69% of the cases at 3 and 5 years (p=0.044). Soft-tissue necrosis developed in 16% and bone necrosis in 4% of the cases. CONCLUSIONS:HDR brachytherapy is an effective method for the treatment of oral tongue carcinoma in low-risk cases. Doses per fraction between 3 and 4 Gy yield LC and complication rates similar to low-dose rate. The perioperative technique promises encouraging results.

journal_name

Brachytherapy

journal_title

Brachytherapy

authors

Guinot JL,Santos M,Tortajada MI,Carrascosa M,Estellés E,Vendrell JB,Muelas R,Chust ML,Mengual JL,Arribas L

doi

10.1016/j.brachy.2009.10.003

subject

Has Abstract

pub_date

2010-07-01 00:00:00

pages

227-34

issue

3

eissn

1538-4721

issn

1873-1449

pii

S1538-4721(09)00357-2

journal_volume

9

pub_type

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