Right temporo-occipital lobe flaky low density shadow consider cerebral infarction, brain tumor, inflammation or infectious disease. 1. Cerebral infarction: cerebral infarction is caused by ischemia and hypoxia of brain tissue, leading to necrosis of brain tissue, and low-density shadow can be seen in cranial CT, and right temporo-occipital lobe cerebral infarction can be occurred in the case of right posterior cerebral artery lesion. 2. Brain tumor: when brain tumor is present, low density shadow can be seen in CT examination, such as cerebral glioma, central nervous system lymphoma, and so on. 3. Inflammatory or infectious diseases: such as neoplasm-like demyelinating disease, viral encephalitis, etc., cranial CT examination may also show flaky low-density shadow. There may be other reasons for the right temporo-occipital lobe hypodense shadow, which requires timely consultation, further examination, clear diagnosis and active treatment to avoid delaying the condition.