Lung cancer : journal of the International Association for the Study of Lung Cancer
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A major drawback of lung cancer screening programs is the high frequency of false-positive findings on computed tomography (CT). We investigated the accuracy of selective 2-[fluorine-18]-fluoro-2-deoxy-d-glucose (FDG) Positron Emission Tomography/Computed Tomography (PET/CT) scan in assessing radiologically indeterminate lung nodules detected in lung cancer screening. ⋯ The visual analysis of FDG PET/CT scan is highly accurate in characterizing indeterminate pulmonary nodules detected in lung cancer screening with low-dose CT. Semi-quantitative analysis does not improve the accuracy of FDG PET/CT over that obtained with a qualitative method for lung nodule characterization.
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Sunitinib is a potent oral tyrosine kinase inhibitor of VEGFRs, KIT, and PDGFRs. In a single arm phase II trial, sunitinib has demonstrated its potential activity in refractory thymic carcinoma (TC) and thymoma (T). Taking advantage of the French RYTHMIC network prospective database, we investigated the off-label efficacy of sunitinib in previously-treated thymic epithelial tumors (TETs) patients not included in a clinical trial. ⋯ Sunitinib is an active treatment in TETs irrespective of histological subtype, supporting the use of tyrosine kinase inhibitors with anti-angiogenic activity as alternative treatment options in refractory disease.
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PD-L1 expression is a predictive biomarker for response to anti-programmed cell death-1 (PD-1)/programmed cell death-ligand 1 (PD-L1) immune checkpoint inhibitors and can be evaluated by immunohistochemistry. Results of the clinicopathologic characteristics of PD-L1-positive lung adenocarcinoma have been inconsistent in previous studies, and there are no reports on the relationship between PD-L1 expression and p53 status in lung adenocarcinoma. ⋯ PD-L1 expression in tumor cells, solid predominant histology, p53 aberrant expression, and PD-L1 expression in tumor-infiltrating immune cells are closely related. These variables should be considered when analyzing the clinical outcomes of patients with lung adenocarcinomas treated with anti-PD1/PD-L1 immune checkpoint inhibitors.