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Sarcoid-like post immunotherapy granulomatosis in a 48-year-old man with metastatic melanoma. CT scan was performed before starting pembrolizumab (a) and two months later (b). The latter shows appearance of disseminated small nodules similar in size, enlarged hilar and mediastinal lymph nodes (red arrow), and progressive disease (yellow arrow). © Department of Radiology, Candiolo Cancer Institute—IRCCS. Turin.
