Hairy glassy corn-like or nodular changes in both lungs are common on chest radiographs and CT in patients with cytomegalovirus pneumonia. Cytomegalovirus (CMV) is a viral pneumonia characterized by the formation of large type A eosinophilic intranuclear and intracytoplasmic inclusion bodies in infected cells. Most are asymptomatic occult infections, but in immunocompromised and infants can cause severe lung infections leading to death. In recent years with the introduction of bone marrow and organ transplantation and the increasing number of AIDS patients, CMV has become the most common causative agent in both conditions. Since CMV infection is common in bone marrow and organ transplant patients, it is important to screen donors well before transplantation and try to select CMV antibody-negative donors. For antibody-positive patients, prophylactic treatment with acyclovir can be given one week before and one month after surgery, and an immunoglobulin drip containing highly potent CMV antibodies can be administered 1 day before and 2 weeks after transplantation to improve passive immunity, followed by one dose every 3 weeks until 100 days after surgery. Prevention of CMV pneumonia.