Symptoms of different brain metastases from lung cancer

Lung cancer brain metastasis is a common and serious complication in patients with advanced lung cancer. It poses a great threat to the patient's life and often represents the failure of lung cancer to be cured. When lung cancer metastasizes to the brain, the most common clinical manifestations are severe headache, projectile vomiting, and visual impairment. In addition, depending on the location of the metastasis, there may also be clinical manifestations such as mental abnormalities, unilateral limb paresthesia or weakness, olfactory hallucinations, hemiplegia or staggering gait, tinnitus and deafness.

(1) Mental abnormalities: When lung cancer patients develop metastatic lesions in the frontal lobe of their brains, they often experience mental abnormalities such as excitement, agitation, depression, repression, memory loss, and fabrication.

(2) Unilateral limb paresthesia or weakness: The presence of metastatic lesions in the parietal lobe in the middle of the cerebral hemisphere often leads to a decrease or disappearance of pain, temperature, vibration, and body discrimination sensations in one side of the limb.

(3) Olfactory hallucination: When metastatic tumors appear in the temporal lobe, olfactory hallucinations may occur under the stimulation of the tumor. In other words, the patient may smell an odor that does not exist, such as burnt rice or burnt rubber.

(4) Hemiplegia or staggering gait: When lung cancer metastasizes to the cerebellum, hemiplegia or staggering gait of drunkenness often occurs after headache, vomiting, and visual impairment, which has very obvious specificity.

(5) Tinnitus and deafness: When brain metastases from lung cancer damage the auditory nerve, unilateral tinnitus may occur. In severe cases, deafness may even occur, which is often noticed when making phone calls or listening to music.