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Results of the combination of external-beam and high-dose-rate intracavitary irradiation for patients with cervical carcinoma


, : Results of the combination of external-beam and high-dose-rate intracavitary irradiation for patients with cervical carcinoma. Gynecologic Oncology 44(1): 48-52

We retrospectively analyzed 220 patients with squamous cell carcinoma of the uterine cervix treated by the combination of external-beam and high-dose-rate intracavitary brachytherapy between 1978 and 1986. Five-year survivals for Stage Ib (n = 15), IIa (n = 18), IIb (n = 107), IIIb (n = 50), and IVa (n = 18) were 72.3, 88.9, 68.9, 64.0, and 16.7%, respectively. The incidences of recurrence outside the pelvis in Stage IIb and IIIb patients (15.0 and 24.0%) were higher than those of local recurrences (10.3 and 12.0%). Eighteen patients (8.2% of the total) had serious intestinal complications. These serious complications were closely correlated with the external-beam dosages. External-beam therapy was performed at 1.8-2.0 Gy/day, and high-dose-rate brachytherapy using a remotely controlled afterloading system (RALS) was performed once a week with 6.0-7.5 Gy at points A/fraction. Treatment dosages to the whole pelvis (WP), with central shieldings (CS), and with RALS according to FIGO stage were as follows: Stages Ib, IIa, 30-40 Gy (WP) plus 24-30 Gy (RALS); Stages IIb, IIIb, 40 Gy (WP) plus 10-20 Gy (CS) plus 24-30 Gy (RALS); Stage IVa, 40-50 Gy (WP) plus 10-20 Gy (CS) plus 20-30 Gy (RALS). From these data, the combination of external-beam and high-dose-rate intracavitary irradiation is an effective therapy for cervical cancer. It is also suggested that an additional combined chemotherapy is necessary to control metastic lesions outside the pelvis for Stages IIb and IIIb.

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PMID: 1730425


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