Combined low-dose-rate brachytherapy and external beam radiation for cervical cancer: experience over ten years.
Cervical cancer was treated with a combination of external beam and intracavitary radiation during a 10-year period at Wayne State University. Data were collected for 216 patients treated radically with external beam radiation (EBRT) and low-dose-rate brachytherapy for cervical cancer between 1980 and 1991 at Wayne State University. Patient distribution by stage was IB, 20.8%; IIA, 7.4%; IIB, 26.9%; IIIA, 1.8%; IIIB, 40.7%; and IVA, 2.3 %. Survival curves were constructed using Kaplan-Meier methods and differences between groups were tested for significance using the log-rank test. Multivariate analysis was done using the Cox proportional hazards model. With a median follow-up of 114 months, actuarial disease-free survival for all patients was 60% at 5 years and 55% at 10 years. Actuarial 5-year survival for Stage IB was 79%; for Stage II, 59%; and for Stage III, 53%. There were 14/216 (6%) of patients with severe late complications. On univariate analysis, race was found to be statistically significant, with Caucasian patients having better survival than African American (P = 0.03). The survival for patients treated in shorter overall times was significantly higher (P<0.001), especially with treatment completion in under 58 days. The stepwise Cox multivariate analysis provided the following significant results: race (African American vs. Caucasian; P = 0.04, RR = 1.6), Stage (II vs. I, P = 0.004, RR = 2.6), Stage (III vs. I; P = 0.004, RR = 2.5), and overall treatment time (P = 0.006, RR = 1.62). Rates of local control, survival, and complications among women treated with combined external beam and intracavitary radiation for cervix cancer were similar to those of prior retrospective studies.
Han
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I
Department of Radiation Oncology, Barbara Ann Karmanos Cancer Center, Detroit, Michigan, USA. hanihn@karmanos.org
Orton
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C
Shamsa
F
F
Hart
K
K
Strowbridge
A
A
Deppe
G
G
Porter
A
A
Chuba
P J
PJ
D000206:Actuarial Analysis; D000230:Adenocarcinoma / Q000473:pathology / Q000532:radiotherapy; D000328:Adult; D000704:Analysis of Variance; D044383:Black People; D001918:Brachytherapy / Q000009:adverse effects; D002294:Carcinoma, Squamous Cell / Q000473:pathology / Q000532:radiotherapy; D018572:Disease-Free Survival; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D016014:Linear Models; D008875:Middle Aged; D015999:Multivariate Analysis; D009367:Neoplasm Staging; D016016:Proportional Hazards Models; D011879:Radiotherapy Dosage; D012074:Remission Induction; D012189:Retrospective Studies; D015996:Survival Rate; D013997:Time Factors; D002583:Uterine Cervical Neoplasms / Q000473:pathology / Q000532:radiotherapy*; D044465:White People; D001741:Black or African American