Abstract
To decrease overall treatment time (OTT) and to compare the clinical outcome of interdigitated high-dose-rate intracavitary brachytherapy (HDRICBT) versus sequential HDRICBT with external beam radiotherapy (EBRT) in the treatment of locally advanced carcinoma cervix. Eighty-two patients with histologically confirmed carcinoma of the cervix, untreated International Federation of Gynecology and Obstetrics Stage IIB-IIIB, were included and randomized into two groups. The study group received EBRT 50 Gy/25 fractions with interdigitated HDRICBT 8 Gy/fraction weekly a total of three fractions. Patients in the control group received EBRT 50 Gy/25 fractions with sequential HDRICBT 8 Gy/fraction weekly a total of three fractions. At the end of the study, results of both groups compared in terms of OTT, acute and late toxicities, and response to therapy clinically. A total of 82 patients were enrolled 41 in each arm. Seventy-two patients completed treatment and were analyzed. Mean OTT in study group and control group was 40 and 60 days, respectively. The median follow-up duration was 10 months (3-18). Most of the acute and late toxicities were of Grade 1 and 2 type and comparable in both study and control groups. Treatment interruption due to treatment-related toxicity was slightly higher in the study group than the control group, but it was statistically insignificant. Os negotiability was not found to be a limiting factor for interdigitated HDRICBT. Interdigitated HDRICBT has equivalent response and toxicities as sequential HDRICBT with the advantage of significant reduction in OTT.
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