Patchy hyperdense shadows in the lungs usually recover in a week to a year. Patchy hyperdense shadows in the lungs are usually due to pneumonia, secondary tuberculosis and other causes. 1. Pneumonia: Pneumonia is a disease in which inflammatory changes occur in the alveoli and interstitium of the lungs. Patients can take amoxicillin, cefuroxime and other drugs under the guidance of the doctor, and those who are allergic to the drugs are forbidden to use them, and it usually takes about a week to be cured. 2. Secondary tuberculosis: Secondary tuberculosis is a disease that recurs after having been infected by Mycobacterium tuberculosis. Patients can take drugs such as isoniazid and pyrazinamide under doctor’s supervision, which are forbidden for those who are allergic to the drugs, and usually patients can be cured in 6 months to a year. Patchy hyperdense shadow in the lungs suggests that patients go to the hospital for a physical examination in time, and treat the symptoms under the guidance of the doctor.