CD274 and metastatic malignant neoplasm in the lymph nodes: An earlier report had suggested PD-L1 to affect histology, lymph node metastasis, and vascular invasion; however, it was inconsistent and reported PD-L1 to affect the tumour microenvironment.1,6 On the other hand, there was no report regarding the effects on extratumoural progression.34,35,41,42 The features of PD-L1-positive/-negative cases may not be well reflected in CT images.