With great interest, we read the article "metabolic tumor heterogeneity analysis by F-18 FDG PET/CT predicts mediastinal lymph node metastasis in non-small cell lung cancer patients with clinically suspected N2"(by Kisoo Pahk et al., 2018). And we would like to thank the authors for this highly useful work, which raises a few points worthy of discussion.
Keywords: Comments; Lung cancer; Mediastinal lymph node metastasis.
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