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Penetrating brain deformity

Introduction
Cause
Examine
Diagnosis

Introduction

Introduction The brain penetrating malformation is abnormal for embryonic development, and maternal infection or dystrophic disorder may also be related. Pathologically, a cystic cavity is formed in the brain, and most of the lining ependymal membrane communicates with the ventricle or subarachnoid space.

Cause

Cause

Brain penetrating malformation is most common in congenital dysplasia, mainly due to developmental disorders of the nervous system during embryonic development. Acquired brain penetrating malformation is mainly related to neonatal intracranial hemorrhage, hypoxic ischemic encephalopathy, craniocerebral injury and cerebrovascular disease.

After brain injury, ischemic necrosis and softening, local brain tissue defects, when the intraventricular pressure increases, or the ventricles are pulled during the scar formation process, so that the ventricles bulge and expand to the brain softening. The cerebrospinal fluid can accumulate in the cystic enlargement of the brain tissue, or penetrate through the parenchyma and the subarachnoid space or the subdural space. More common in the lateral ventricle frontal or horns, occasionally seen in the occipital angle. The cysts are inflated in shape and size, and the largest can fill the entire cranial cavity.

Examine

an examination

Related inspection

Craniocerebral ultrasonography CT examination of intracranial pressure monitoring of skull base MRI examination

[clinical performance]

There are often symptoms of impaired local nerve function.

[Image performance]

1.CT performance:

A large malformed cyst in the brain parenchyma with the same density as the cerebrospinal fluid, clear borders, and communication with the ventricular system or the subarachnoid space, which may be unilateral or bilateral, mostly located in the forehead and anterior. The same lateral ventricle is generally enlarged accordingly. No enhancement after enhancement.

2.MR performance:

The cystic signals T1 and T2 are weighted by the same cerebrospinal fluid, communicating with the ventricle or the subarachnoid space, with no edema around the lesion, and dilated sulci, cerebral cistern or ventricle.

Diagnosis

Differential diagnosis

The disease should be differentiated from the necrotic cavity of the brain tumor and the abscess of the brain abscess. The necrotic cavity of the brain tumor, occasionally in the cystic cavity, has a clear boundary, but the wall of the cyst wall still has a wall joint, and the surrounding is often accompanied by tumor tissue. Both CT and MRI can show their changes. The abscess boundary of the brain abscess is often very clear. When the abscess has a capsule, CT can show ring enhancement, and the abscess is different in pus and cerebrospinal fluid. The latter two cavities generally do not communicate with the ventricles or the subarachnoid space.