PD-1 Inhibitor–Related Pneumonitis in Advanced Cancer Patients: Radiographic Patterns and Clinical Course

Purpose: Investigate the clinical characteristics, radiographic patterns, and treatment course of PD-1 inhibitor–related pneumonitis in advanced cancer patients. Experimental Design: Among patients with advanced melanoma, lung cancer, or lymphoma treated in trials of nivolumab, we identified those who developed pneumonitis. Chest CT scans were reviewed to assess extent, distribution, and radiographic patterns of pneumonitis. Results: Among 170...