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[Three-dimensional conformal radiotherapy for locoregionally recurrent non-small cell lung cancer after initial radiotherapy]. | LitMetric

[Three-dimensional conformal radiotherapy for locoregionally recurrent non-small cell lung cancer after initial radiotherapy].

Zhonghua Zhong Liu Za Zhi

Department of Radiation Oncology, Cancer Institute (Hospital), Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100021, China.

Published: March 2006

AI Article Synopsis

Article Abstract

Objective: To evaluate the feasibility, therapeutic effects and normal tissue complications of three-dimensional conformal radiotherapy (3DCRT) for locoregionally recurrent non-small cell lung cancer after initial radiotherapy.

Methods: Between August 1999 and August 2003, 27 such patients were treated with 3DCRT after initial radiotherapy. This series consisted of 25 men and 2 women with a median age of 64 years. Radiotherapy was delivered at 2 Gy per fraction, 5 fractions per week, to a median dose of 50 Gy. Treatment results and normal tissue complications were assessed with WHO and RTOG/EORTC criteria.

Results: Based upon a median follow-up time of 20.6 months, 25 patients (92.6%) completed the planned 3DCRT treatment. Their clinical symptom relief rate was 79.1%, and the response rate was 59.3% with a complete remission rate of 14.8% (4/27), partial remission rate of 44.4% (12/27). The overall 1- and 2-year survival (OS) rates were 73.8% and 25.4% with a median survival time (MST) of 20 months. The 1- and 2-year local progression free survival (LPFS) rates were both 88.8%. Grade 2 and grade 3 acute radiation pneumonitis developed in 7.4% (2/27) and 11.1% (3/27). Grade 2 late radiation pneumonitis developed in 11.1% (3/27).

Conclusion: 3DCRT is feasible and advisable for locoregionally recurrent non-small-cell lung cancer, giving a good immediate tumor response and acceptable normal tissue complications.

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