Combined low-dose-rate brachytherapy and external beam radiation for cervical cancer: experience over ten years

Radiat Oncol Investig. 1999;7(5):289-96. doi: 10.1002/(SICI)1520-6823(1999)7:5<289::AID-ROI4>3.0.CO;2-X.

Abstract

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.

MeSH terms

  • Actuarial Analysis
  • Adenocarcinoma / pathology
  • Adenocarcinoma / radiotherapy
  • Adult
  • Analysis of Variance
  • Black People
  • Brachytherapy* / adverse effects
  • Carcinoma, Squamous Cell / pathology
  • Carcinoma, Squamous Cell / radiotherapy
  • Disease-Free Survival
  • Female
  • Follow-Up Studies
  • Humans
  • Linear Models
  • Middle Aged
  • Multivariate Analysis
  • Neoplasm Staging
  • Proportional Hazards Models
  • Radiotherapy Dosage
  • Remission Induction
  • Retrospective Studies
  • Survival Rate
  • Time Factors
  • Uterine Cervical Neoplasms / pathology
  • Uterine Cervical Neoplasms / radiotherapy*
  • White People