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  • 2002
  • In a 2002 study involving 78 patients with a migraine or tension-type headache, CT scans showed abnormalities in over a third of the patients, though arachnoid cysts only accounted for 2.6% of patients in this study. (wikipedia.org)
  • venous
  • Any of numerous villuslike projections of the cranial arachnoid through the dura into the superior sagittal sinus or into its lateral venous lacunae. (dictionary.com)
  • Diffusion across the arachnoid granulations into the superior sagittal sinus returns CSF to the venous circulation. (wikipedia.org)
  • botany
  • Arachnoid as a descriptive term in botany, refers to organs such as leaves or stems that have a cobwebby exterior appearance, from being covered with fine white hairs, usually tangled. (wikipedia.org)
  • loosely
  • The stems are loosely arachnoid and stiffly ascending. (wikipedia.org)
  • Leaves have blades that are linear to oblong or narrowly elliptic, loosely arachnoid when young, abaxial and adaxial faces glabrous(smooth), and lobes undivided or coarsely few toothed. (wikipedia.org)
  • stems
  • The arachnoid appearance is common on the leaves and stems of various sclerophyllous members of the Asteraceae, such as some thistles. (wikipedia.org)
  • layer
  • The usages of various authors in distinguishing between "arachnoid" and a few other terms referring to hairiness, such as floccose, pubescent, tomentum, cottony, or villous, tend to be arbitrary, but as a rule the term is best reserved for hairiness lighter than a felted layer, and inclined to rub off or to be easily damaged in other ways. (wikipedia.org)
  • Meningiomas can develop from the arachnoid layer. (wikipedia.org)