ARACHNOID DIVERTICULA
\ɐɹˈaknɔ͡ɪd da͡ɪvətˈɪkjʊlə], \ɐɹˈaknɔɪd daɪvətˈɪkjʊlə], \ɐ_ɹ_ˈa_k_n_ɔɪ_d d_aɪ_v_ə_t_ˈɪ_k_j_ʊ_l_ə]\
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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
tinctura quininae ammoniata
- A preparation made by dissolving quinin sulphate in alcohol [Br. Ph.].