PERINEURAL CYSTS
\pˈɛɹɪnjˌuːɹə͡l sˈɪsts], \pˈɛɹɪnjˌuːɹəl sˈɪsts], \p_ˈɛ_ɹ_ɪ_n_j_ˌuː_ɹ_əl s_ˈɪ_s_t_s]\
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Intracranial or spinal cavities containing a cerebrospinal-like fluid, the wall of which is composed of arachnoidal cells. They are most often developmental or related to trauma. Intracranial arachnoid cysts usually occur adjacent to arachnoidal cistern and may present with HYDROCEPHALUS; HEADACHE; SEIZURES; and focal neurologic signs. Spinal arachnoid cysts may be extradural, intradural, or perineural and tend to present with signs and symptoms indicative of a RADICULOPATHY. (From Joynt, Clinical Neurology, 1994, Ch44, pp105-115)
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Word of the day
Dopamine Acetyltransferase
- An enzyme that catalyzes the of groups from acetyl-CoA to arylamines. They have wide specificity for aromatic amines, particularly serotonin, and can also catalyze acetyl transfer between arylamines without CoA. EC 2.3.1.5.