Supplementary Material for: Diagnosis of Good Syndrome Following Recurrent Coronavirus Disease-2019 Infections

Background: Good syndrome is defined as the co-occurrence of a thymoma and hypogammaglobulinemia. Case: In this case report we present a patient who was diagnosed with Good Syndrome following recurrent infections with SARS-CoV-2. Of particular note was the patient’s repeat presentation despite receiving outpatient treatment with nirmatrelvir-ritonavir. We describe the patient’s presentation, diagnosis, and treatment - including robotic thymectomy and passive immunization with IVIG - and report the benefit to quality of life that the patient experienced. Conclusion: This case highlights the importance of quantitative testing of immunoglobulins in patients with known thymomas who present with recurrent infections of SARS-Cov-2.