Cerebellopontine angle syndrome

Introduction The cerebellopontine angle syndrome is a group of cranial nerve palsy and cerebellar symptoms caused by cerebral cerebral horn lesions. The lesion is in the head and can go to the hospital for oncology, neurology, and brain surgery.

Cause

The triangular region between the lateral part of the medullary medullary junction and the cerebellum, due to acoustic neurofibromatosis, meningiomas, cholesteatoma, arachnoid cysts (arachnoid cysts, belonging to congenital benign brain cyst lesions, due to abnormal arachnoid division during development) The wall of the capsule is mostly arachnoid, glial and pia mater, and there is cerebrospinal fluid-like cyst fluid in the capsule. The cyst is located on the surface of the brain, brain fissure and cerebral cistern, and does not involve the brain parenchyma. It is mostly single, a few multiple. More asymptomatic, large volume can simultaneously press the brain tissue and skull, can produce neurological symptoms and changes in the development of the skull. This disease is more common in children and adolescents, more men, more common on the left side than the right side.

an examination

Related inspection

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The order of clinical symptoms is: cochlear and vestibular neuropathy; occipital pain with suboccipital discomfort; ataxia, adjacent cranial nerve symptoms; increased intracranial pressure; dysarthria (consonant disorder refers to cause and speech The expression of the relevant neuromuscular system of organic damage leads to weakening of the muscles of the vocal muscles, or changes in muscle tone, poor coordination, etc., causing speech problems such as inaccurate pronunciation, uneven rhyme, slow speech flow and rhythm disorder. Dysphagia; cerebellar crisis and difficulty breathing. Among them, the earliest occurrence of hearing and balance disorder has important value for early diagnosis. EEG and brain CT examinations are required.

Differential diagnosis

1. Kernig sign: also known as the flexor and knee extension test, the patient supine position bends the knee joint into a right angle, and then passively bends the flexed leg, when the knee joint can not be straightened, there is resistance and pain and the angle of the knee joint is not formed. It is positive for K sign at 135°. Kernig sign positive in addition to suggesting that there are signs of meningeal irritation, it is suggested that the posterior root is stimulating, lumbosacral radiculopathy, the pain is limited to the waist and the affected limb, while the meningeal stimulation sign Kernig sign is bilateral, and the same intensity, pain Located on the chest and back and not limited to the waist and affected limbs.

2.Brudzinski sign: the patient is supine, the bilateral pulp and knee flexion occurs when the neck is flexed, and the bilateral upper cheeks are pressed to cause double upper arm abduction and elbow flexion. When the pubic symphysis occurs, the double appears. The flexion and adduction of the lower extremities are called positive for Brudzinski.

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