Successful treatment with pembrolizumab for microsatellite instability-high thymic carcinoma: A case report

This case demonstrates the potential efficacy of pembrolizumab in treating MSI-high thymic carcinoma, emphasizing the importance of MSI testing in such cases. Routine MSI evaluation should be considered to identify candidates for immunotherapy. Further research is needed to confirm the role of pembrolizumab in this rare malignancy and to establish its broader applicability under similar conditions.