Примери за arachnoid

• Suprasellar arachnoid cyst compressing the brain stem and bilateral hemispheres.

• They are lined by arachnoid membranes, and filled with fluid which is the same character as the cerebrospinal fluid.

• Any injury to the arachnoid membrane carries a risk of arachnoiditis.

• It does not penetrate the arachnoid membrane, nor is a contrast agent injected, but arachnoiditis has been reported following epidural injections.

• Stems and leaves are finely arachnoid-tomentose becoming glabrous and green with age.

• The dura is opened and the arachnoid incised.

• They arise from the arachnoid cap cells of the arachnoid villi in the meninges.

• The space between the arachnoid and the underlying pia mater is called the subarachnoid space.

• It originates from the arachnoid (not the dura), the tissue covering the brain and spinal cord lying deep to the dura.

• The space between the dura and the arachnoid (in both head and spine), the subdural space, is also a potential space.

• The arachnoid and pia mater are sometimes considered as a single structure, the leptomeninx, or the plural version, leptomeninges.

• In subdural hematoma, bleeding occurs between the dura and the arachnoid mater.

• Intracranial arachnoid cysts usually occur adjacent to the arachnoidal cistern.

• In practice, diagnosis of symptomatic arachnoid cysts requires symptoms to be present, and many with the disorder never develop symptoms.

• However, with treatment most individuals with symptomatic arachnoid cysts do well.