Case Presentation: We present the case of a 77-year-old man admitted with failure to thrive and progressive dyspnea. He had a 6-year history of lung squamous cell carcinoma and a recent history of immune checkpoint inhibitor (ICI) toxicity (myocarditis, pneumonitis, and hepatitis), currently on week 27 of a prednisone taper (35 mg daily). He was [...]