Fig. 3From: Steroid-refractory dermatologic and pulmonary toxicity in a patient on rituximab treated with pembrolizumab for progressive urothelial carcinoma: a case reportPathology results of transbronchial biopsy. a Higher magnification reveals Masson bodies typical of organizing pneumonia and fibrinous exudate. b ×40 magnification of staining for CD4+ cells in the tissue and c ×40 magnification of staining for CD8+ cells in the tissues. Overall, reveals a mixed presence of both CD4+ and CD8+ in the interstitial infiltrateBack to article page