Good's Syndrome: Successful Management of Thymoma With Hypoimmunoglobulinemia.

We report a case of Good's syndrome managed with surgery and immunotherapy in a 58-year-old man who presented with a left arm skin infection and cough for 2 months. Imaging and laboratory studies revealed a large anterior mediastinal mass and panhypoimmunoglobulinemia, respectively. A biopsy was consistent with thymoma, and a diagnosis of Good's syndrome was established. Thymectomy was followed by intravenous immunoglobulin G and filgrastim with complete recovery through 9 months after discharge. Good's syndrome remains a rare entity often associated with poor prognosis. Adequate surgical resection remains key to outcomes, whereas immunotherapy aids in reducing postoperative complications and may improve survival.