Determining optimal clinical target volume margins on the basis of microscopic extracapsular extension of metastatic nodes in patients with non–small-cell lung cancer

Purpose: To determine the optimal clinical target volume (CTV) margins around the nodal gross tumor volume (GTV) in non–small-cell lung cancer (NSCLC) patients by assessing microscopic tumor extension beyond regional lymph node capsules. Methods and Materials: The incidence of nodal extracapsular ex...

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