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The brain will undergo degenerative changes with age, anatomically and histically, as long as it is manifested as brain weight reduction and cerebral arteriosclerosis, etc.
, this change is a gradual process, generally starting in young and middle-aged, but often after the age of 60 CT and MRI can show this performance, generally called the brain with such manifestations as the elderly brain
.
Brain atrophy caused by the decrease in nerve cells that occurs with age is called senile brain atrophy
.
Manifested as:
(1) diffuse enlargement of the ventricles;
(2) diffuse widening
of the sulci, cerebral fissure and cistern.
Brain atrophy refers to the enlargement of the ventricles and subarachnoid space secondary to the reduction of brain tissue caused by various causes, which can occur in white matter and gray matter
, respectively or simultaneously.
Cerebral atrophy: localization (after trauma, infection, cerebral infarction, etc.
can cause localized brain atrophy); Diffuse (senile brain, subcortical arteriosclerotic encephalopathy, multiple sclerosis, Alzhemeimer disease, Wilson's disease, cerebral hypoxia, poisoning, Parkinson disease, cerebellar atrophy, etc.
can cause diffuse brain atrophy).
Clinical symptoms
such as mental decline, involuntary activity, sensory or motor disturbances, epilepsy, and ataxia are generally present.
In actual work, it is sometimes difficult to strictly distinguish: generally if you are older (more than 60 years old), there are corresponding imaging manifestations, the degree is not very serious, the clinical symptoms are not obvious or mild, it is reported as senile brain or senile brain atrophy; Otherwise, brain atrophy
can be reported.
In short, there is the concept of senile brain, but it can be part of the manifestations of physiological atrophy (the main part), and can also contain components of pathological atrophy, so the current understanding is not very uniform
.