The clinical significance of ground glass opacities in lung adenocarcinoma in the era of UICC-TNM classification ver.8

I congratulate Dr. Kim on the publication entitled “Consolidation-to-tumor ratio and tumor disappearance ratio are not independent prognostic factors for the patients with resected lung adenocarcinomas”. I read with great interest the article by Kim and colleagues (1), which showed that the consolidation-to-tumor ratio (CTR) or the tumor disappearance ratio (TDR) is not an independent prognostic predictor in patients treated with pulmonary resection when using UICC-TNM classification version 8.