A case of different EGFR mutations in surgically resected synchronous triple lung cancer

With recent advances in diagnostic imaging modalities and the widespread use of chest computed tomography (CT), the frequency of multiple synchronous primary lung cancer including cases with pure ground-glass opacity (GGO) lesions or mixed ground-glass nodules (GGNs) has been increasing (1). It is important to know the driver mutation of each lesion in order to establish an accurate pathologic stage and subsequent treatment strategy