FIGO IIIB squamous cell carcinoma of the cervix: an analysis of prognostic factors emphasizing the balance between external beam and intracavitary radiation therapy
| Autor: | Patricia J. Eifel, Mark D Logsdon |
|---|---|
| Rok vydání: | 1999 |
| Předmět: |
Adult
Cancer Research medicine.medical_specialty medicine.medical_treatment FIGO Stage IIIB Brachytherapy Uterine Cervical Neoplasms medicine Carcinoma Humans Radiology Nuclear Medicine and imaging Treatment Failure Cervix Pelvis Aged Neoplasm Staging Retrospective Studies Aged 80 and over Radiation Radiotherapy business.industry Radiotherapy Dosage Retrospective cohort study Middle Aged Prognosis medicine.disease Organizational Policy Surgery Radiation therapy Treatment Outcome medicine.anatomical_structure Oncology Epidermoid carcinoma Carcinoma Squamous Cell Female Radiology Complication business Follow-Up Studies |
| Zdroj: | International Journal of Radiation Oncology*Biology*Physics. 43:763-775 |
| ISSN: | 0360-3016 1981-1993 |
| Popis: | To define patient, tumor, and treatment factors that influence the outcome of patients with FIGO Stage IIIB squamous cell carcinoma of the intact uterine cervix.The records of 1,096 patients treated with radiation therapy between 1960 and 1993 for FIGO Stage IIIB squamous cell carcinoma of the intact uterine cervix were reviewed retrospectively. Of these, 983 (90%) were treated with curative intent and 113 were treated only to achieve palliation of symptoms. Of 907 patients who completed the intended curative treatment, 641 (71%) were treated with a combination of external beam irradiation (EBRT) and intracavitary irradiation (ICRT) and 266 (29%) were treated with EBRT only. The median duration of treatment for these 907 patients was 51 days. Between 1966 and 1980, only 52% of patients who completed treatment with curative intent received ICRT, compared with 92% of patients treated during 1981-1993, an increase that reflects an evolution in the philosophy of treatment for advanced tumors. In general, the intensity of ICRT correlated inversely with the dose of EBRT to the,central pelvis. Median follow-up of surviving patients was 134 months.For 983 patients treated with initial curative intent, disease-specific survival (DSS) was significantly worse for those who were40 years old, had experienced more than a 10% weight loss, or had a hemoglobin level10 g/dl before or during radiation therapy. Tumor factors that correlated with a relatively poor DSS were bilateral pelvic wall involvement, clinical tumor diameteror = 8 cm, hydronephrosis, lower vaginal involvement, and evidence of lymph node metastases on lymphangiogram (p0.01 in all cases). For the 907 patients who completed treatment with curative intent, 641 who had ICRT had a DSS of 45% at 5 years, compared with 24% for those treated with EBRT alone (p0.0001). Those who received52 Gy of EBRT to the central pelvis had DSS rates of 27-34%, compared with 53% for patients treated with lower doses of EBRT to the central pelvis and more intensive ICRT (p0.0001). At 5 years, the actuarial risk of major complications was also greater for patients treated with52 Gy of EBRT to the central pelvis (57-68%), compared with those who had 48-52 Gy (28%) and those who hador = 47 Gy of EBRT to the central pelvis (15%) (p0.0001). Outcome was also compared for four time periods during which different treatment policies were in place for patients with Stage IIIB disease. The highest DSS (51%) and lowest actuarial complication rate (17%) were achieved during the most recent period (1981-1993) when modest doses of EBRT were combined with relatively intensive ICRT (p0.01 for both comparisons).Aggressive use of ICRT, carefully balanced with pelvic EBRT, is necessary to achieve the best ratio between tumor control and complications for patients with FIGO Stage IIIB carcinoma of the cervix. In our experience, the highest DSS rates and the lowest complication rates were achieved with a combination of 40-45 Gy of EBRT combined with ICRT. |
| Databáze: | OpenAIRE |
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