3 research outputs found
Clinical observation of the intracranial arachnoid cysts
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7μλΆν° 1981λ
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[μλ¬Έ]Twenty eight intracranial archnoid cysts were experienced from July, 1972 to August, 1981, of which 17 cases were operated. The clinical analysis and surgical experiences were summarized as follows.
1. The supratentorial cysts were 67.9% and the infratentorial cysts were 32.1% of the intracranial arachnoid cysts.
The predilection sites were middle cranial fossa of the supratentorial (60.7%) and the inferior midline of the infratentorial (17.9%).
2. The middle fossa arachnoid cysts were prominent in males under the age of 20.
3. The common complicating lesions in the supratentorial arachnoid cysts were chronic subdural hematoma(23.5%) and subdural hygroma(5.9%). Hydrocephalus was usually combined with the infratentorial arachnoid cyst (66.7%).
4. The most frequent symptom was headache(75%) with similar frequency in both supratentorial and infratentorial lesions. In the supratentorial cysts, headache was also complained with highest frequency even in cases without increased intracranial pressure(61.5%). The main clinical features of arachnoid cysts were headache, signs of increased intracranial pressure, other neurologic deficits and seizure in order of frequency.
5. Cranial deformities on the plain X-ray files were observed in 70.6% of middle fossa cysts . The brain CT scan provided a definite diagnostic information, while the cerebral angiography offered clues for differential diagnosis.
6. The direct intracranial approach was selected as a curative measure in most cases and the essential step in this procedure was thought to establish a communication between the cyst and the basal cistern or adjacent subarachnoid space. But in a few special cases such as deep-seated cysts or extensively large
ones, a cystoperitoneal shunt was a more preferable procedure . The infratentorial cysts with hydrocephalus almost always required ventriculoperitoneal shunt in this series. It was considered to be very important to perform periodic follow-up brain CT scan to detect a recurrence of cyst or recollection of the cerebrospinal fluid, postoperative complications and persistent hydrocephalus.restrictio