Patterns of Failure following Postoperative Radiation Therapy Based on “Tumor Bed with Margin” for Stage II-IV Type C Thymic Epithelial Tumor

This retrospective study to report failure patterns and suitability of radiation target volume of "tumor bed only with margin" in Masaoka stage II-IV type C thymic epithelial tumor following postoperative radiation therapy indicated that most failures occurred out of radiation field, mostly in pleura not regional lymph nodes. Policy of target volume confined to tumor bed only seems reasonable in treating these patients although development of more effective systemic therapy regimen would be warranted.

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