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between the arachnoid and the pia mater.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.


Underneath the arachnoid membrane.
Farlex Partner Medical Dictionary © Farlex 2012


Situated or occurring beneath the arachnoid membrane, or between the arachnoid and the pia mater: subarachnoid hemorrhage.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.


Referring to the space underneath the arachnoid mater.
Gale Encyclopedia of Medicine. Copyright 2008 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
Similar subarachnoidal and/or parenchymal cellular infiltrates have been shown in brain samples of NMDAR, CASPR2, and LGI1 antibody-positive autoimmune encephalitis patients (9,10,11,12,13).
(9) * Brain hemorrhage, ischemic stroke, subarachnoidal bleeding, but excluding transient ischemic attacks.
Subarachnoidal Neurocysticercosis nonresponsive to cysticidal drugs: a case series.
In the data analysis, only patients diagnosed with ischemic stroke or intracerebral or subarachnoidal hemorrhages at discharge were included.
An intra-arterial lysis was performed, which resulted in a subarachnoidal and left parietal intracerebral haemorrhage (Fig.
Patients presenting with a subarachnoidal hemorrhage (SAH) caused by an aneurysmal rupture often develop NPE as a secondary complication.
The postmortem examinations revealed a 3x2 cm focal subarachnoidal hemorrhage (SAH) in case 8 and a 10x7 cm SAH in case 11.
Course of glomerular filtration rate markers in patients receiving high-dose glucocorticoids following subarachnoidal hemorrhage.
Incidence and survival rates during a two-year period of intracerebral and subarachnoidal haemorrhages, cortical infarcts, lacunes and transient ischaemic attacks: the Stroke Registry of Dijon: 1985-1989.
Of them, 48 (18.5 Percent) with ischaemic stroke and 29 (11.2 Percent) with haemorrhagic stroke (intraparenchymal haematoma, subdural haematoma and subarachnoidal haemorrhage) were excluded from the study due to other concomitant diagnoses and excluding criteria, respectively.