Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Good syndrome ?
    ### Response:
    Good syndrome is a rare, adult-onset primary immunodeficiency suspected in patients who exhibit hypogammaglobulinemia and low levels of B cells along with a benign thymic tumor (thymoma) on chest X-ray. Symptoms include frequent opportunistic infections involving the sinuses and lungs, including severe CMV disease, P.
    