We have all heard of lung cancer and liver cancer, but no one has heard of brain cancer. There is still no way to identify the cause of this disease, because it is very likely related to chromosomal lesions and neurological lesions in the brain. Once it occurs, it will compress various nerve functions, causing the patient's limb ability to gradually decline, so special attention should be paid to it in normal times. Pathological etiology Intracranial tumors are also called brain tumors, and their cause is still unknown. Disease diagnosis Intracranial tumors often need to be differentiated from intracranial inflammations such as arachnoiditis, purulent and tuberculous meningitis, tuberculoma, brain abscess, chronic subdural hematoma, intracerebral hematoma, hypertensive encephalopathy and cerebral infarction, intracranial parasitic diseases, granuloma, fungal diseases, papillitis and retrobulbar neuritis. Inspection method Plain X-rays; Cerebral angiography; ; Ventriculography; ; Pneumoencephalography; ; CT; ; MRI. ; complication Local symptoms are also called positioning symptoms. Due to the different locations of gliomas, the local symptoms they produce are also different. The clinician can judge the location of the tumor based on its manifestations and other factors. The most important lesion symptoms are the result of direct compression, stimulation or destruction of brain tissue or cranial nerves by the tumor. They have positioning value, but they are most diagnostically significant when they appear in the early stages of the disease. In the late stages, due to indirect effects such as compression of brain tissue and cranial nerves in other parts, edema and involvement, some adjacent and distant symptoms of the tumor may appear. The former is caused by compression of the brain or cranial nerves near the tumor, such as pons and medulla oblongata symptoms in cerebellar tumors, IIIrd and Disorders of cranial nerve IV; hemiplegia caused by lateral fissure tumors. The occurrence of the above symptoms is related to tumor compression, brain tissue displacement or cerebral blood circulation disorders. Remote symptoms are dysfunctions of cranial nerves at locations distant from the tumor. For example, in the case of posterior cranial fossa tumors, hydrocephalus affects the frontal, temporal and parietal lobes, which may lead to visual and auditory hallucinations or epilepsy. When intracranial pressure increases, bitemporal hemianopsia and enlarged sella turcica may occur due to the expansion of the third ventricle. ; |
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