While most bone metastases of NSCLC present as lytic or mixed types, a previous study reported that the presence of sclerotic metastatic lesions was associated with a good prognosis compared to other types of metastases in epidermal growth factor receptor (EGFR)-mutant lung adenocarcinoma [8, 9]. The gene discussed is EGFR; the disease is non-small cell lung carcinoma.