Massive hyperdensity seen in the lower field of the right lung is generally a description of a lung lesion on imaging such as chest radiograph or chest CT, and such a lesion is considered to be either an infectious lesion or a neoplastic lesion. The common causes of infectious lesions in the lungs are considered to be Mycobacterium tuberculosis, bacteria, viruses, etc. Depending on the cause of the infection, different medications are given, such as anti-tuberculosis treatment with medications such as rifampicin, isoniazid, etc., treatment of bacterial pneumonia with ceftazidime, levofloxacin, etc., and treatment of viral infections with medications such as acyclovir and ganciclovir. If the lung lesion is caused by tumor disease, usually through CT, puncture pathology and other tests to clarify the diagnosis as well as staging, give surgery, chemoradiotherapy and other treatments. Drugs need to be used under the guidance of a doctor, avoid self-medication.