Results and prognostic factors of hypofractionated stereotactic radiation therapy for primary or metastatic lung cancer

Journal of Thoracic Oncology : Official Publication of the International Association for the Study of Lung Cancer
Haeyoung KimHeerim Nam

Abstract

Retrospective analyses were performed on the patients with primary or metastatic lung cancer, who were treated with hypofractionated stereotactic radiation therapy (HSRT). HSRT was applied to 43 patients since 2001 till 2007: 16 patients were with stage I primary lung cancer and 27 were with metastasis. Radiation was delivered in five consecutive daily fractions. The total doses were 50 Gy to 8 patients and 60 Gy to 35 patients. The median follow-up period was 21 months (range, 3-87 months). The effects of tumor size (<2.5 cm versus >or=2.5 cm) and radiation dose (50 Gy/5 fractions versus 60 Gy/5 fractions) on local tumor control were evaluated. Local tumor progression occurred in three patients (6.9%). The 5-year local progression-free survival and cancer-specific survival rate were 89.4 and 53.3%, respectively. Tumors <2.5 cm resulted in higher crude local tumor control rate than tumors more than or equal to 2.5 cm (100.0% versus 82.3%, p = 0.05). In tumors more than or equal to 2.5 cm, the local tumor control rate was 66.7% with 50 Gy/5 fractions and 85.7% with 60 Gy/5 fractions (p = 0.46). In HSRT for primary or metastatic lung cancers, smaller tumor size was significant prognostic factor for higher local control. Higher ra...Continue Reading

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Citations

Jan 25, 2011·Journal of Thoracic Oncology : Official Publication of the International Association for the Study of Lung Cancer·Nikolaos TselisNikolaos Zamboglou
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