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Patient’s computed tomography of chest indicating (A) baseline CT scan before pembrolizumab therapy, (B) reverse halo sign (dotted arrow) and consolidation with air bronchogram (straight arrow) features of OP following therapy of pembrolizumab, and (C) follow-up CT scan indicating complete resolution of the organized pneumonia, one month after the steroid therapy. Metastatic lesion in the right middle lobe.
