Clinicians should be aware that eosinophilic pneumonia is one of the types of drug-induced lung injury that can be caused by tegafur/gimeracil/oteracil (TS-1).
Keywords: Drug‐induced pneumonia; TS‐1; eosinophilic pneumonia.
© 2020 The Authors. Respirology Case Reports published by John Wiley & Sons Australia, Ltd on behalf of The Asian Pacific Society of Respirology.