| Summary: | Abstract Vogt–Koyanagi–Harada disease (VKHD) is a rare systemic granulomatous autoimmune disease that affects melanocyte‐rich organs such as eye, inner ear, meninges, skin, and hair. VKHD leads to chronic uveal inflammation accompanied by a decline in visual acuity in some patients when appropriate corticosteroid treatment was not initiated in an early phase. Immune checkpoint inhibitors (ICIs) are widely used in the treatment of several kinds of cancers and chemoimmunotherapy has become the standard of care in the first‐line treatment of non‐small cell lung cancer (NSCLC). While ICIs induce immune‐related adverse events, drug‐induced VKHD is quite rare with only four reports in the ICI monotherapy; three patients with melanoma and one patient with NSCLC. We describe the first case of VKHD during chemoimmunotherapy including pembrolizumab in a patient with NSCLC, which was successfully treated with corticosteroid without any sequela.
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