Fungal sinusitis is a disease which can be grouped into invasive and noninvasive forms. The invasive entities include the acute/fulminant and chronic/indolent forms. The noninvasive entities include the fungus ball and allergic forms. The noninvasive forms, however, can develop into invasive disease under certain immunosuppressive states. The patient in this case report had the fungus ball form of fungal sinusitis which evolved into chronic, and then the acute/fulminant form approximately two weeks after undergoing cadaver-donor kidney transplantation. Due to the patient's immunosuppressed state, the fungus spread beyond the sinus region and eventually lead to fulminant disseminated disease. The severity of the fungal disease corresponded directly to the severity of the patient's immunosuppression.