Brain cyst

Introduction to brain cyst Cerebral cysts generally refer to arachnoid cysts, which are formed by a cerebrospinal fluid-like cystic fluid surrounded by a bag-like structure formed by the arachnoid membrane. There are two types of congenital and secondary, the former being the most common arachnoid cyst. The latter is caused by intracranial inflammation, traumatic brain injury or after surgery. basic knowledge The proportion of illness: 0.0032% Susceptible people: no specific population Mode of infection: non-infectious Complications: hydrocephalus, epilepsy

Cause of brain cyst

No relevant information.

Brain cyst prevention

1, congenital diseases are difficult to prevent, but the mother's good father's good habits can reduce the incidence of fetal diseases.

2. If other factors are caused, it should be prevented from the cause.

Cerebral cyst complications Complications hydrocephalus epilepsy

No relevant information.

Cerebral cyst symptoms Common symptoms Increased intracranial pressure transparent compartment widens epileptic headache

The clinical manifestations are related to the cyst site. Common sites include: lateral fissure, bridge cerebellum, bungee, quadrilateral, cerebellar vermis, saddle and saddle, bilateral hemisphere, cerebral bulge, slope, etc. Most of the lesions appear in early childhood, including: symptoms of increased intracranial pressure, such as headache, nausea, vomiting, lethargy, etc.; epilepsy; cranial swelling; local symptoms or signs caused by mass effect. Saddle cysts can also be characterized by hydrocephalus, developmental delay, precocious puberty, and visual impairment. The condition deteriorates due to the rupture of the cyst into the sac or the subarachnoid space.

Examination of brain cysts

1, head CT performance

The border is smooth and has no calcified extracellular cystic mass of brain parenchyma. The density is similar to that of cerebrospinal fluid, and there is no obvious enhancement. Distorted deformation of the skull adjacent to the skull. A convex or cranial fossa cyst can compress the ipsilateral ventricle leading to a midline shift. The saddle, quadruple pool and posterior fossa cysts can compress the third and fourth ventricles, resulting in hydrocephalus.

2, brain MRI performance

T1 is a low signal, T2 is a high signal, and the wall is not strengthened.

Diagnosis and differentiation of brain cyst

Conventional CT and MRI examinations can generally be diagnosed. In a few cases, cranial fluid contrast agents or flow measurements are used for upper and lower cranial fossa lesions in the midline. For cognitive function, the Simple Mental Rating Scale (MMSE) can also be used for evaluation.

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