A case describes a cutaneous sarcoidosis-like reaction in a patient on pembrolizumab, indicating potential side effects.
We describe a patient who developed a cutaneous sarcoidosis-like reaction while on pembrolizumab, with both a facial lupus pernio-like rash and large subcutaneous nodules (Darier-Roussy disease) on her limbs.
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Mackie et al. (2026) studied this question.
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