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 (hī′drō-sĕf′ə-ləs) also hy·dro·ceph·a·ly (-lē)
A usually congenital condition in which an abnormal accumulation of fluid in the cerebral ventricles causes enlargement of the skull and compression of the brain, destroying much of the neural tissue.

[New Latin, from Greek hudrokephalon : hudro-, hydro- + kephalē, head; see ghebh-el- in Indo-European roots.]

hy′dro·ce·phal′ic (-sə-făl′ĭk), hy′dro·ceph′a·loid′ (-loid′), hy′dro·ceph′a·lous (-ləs) adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
References in periodicals archive ?
CT head without contrast at an outside facility was reported as hydrocephalous with possible aqueduct stenosis.
Congenital hydrocephalous is a birth defect characterised by accumulation of excess amount of cerebrospinal fluid (CSF) in the nervous system affecting around 1.1 per 1,000 infants.
For instance, in our study, patients who had a positive follow-up CT had a mean INR of 1.45 +-0.08 and those with negative CT, had mean INR of 1.2 +-0.14 (p 5mm, hydrocephalous, bleed of more than 10 mm thickness) had higher chances of re-operation (44.8%) and higher mortality (31%) as compared to patients who had negative CT (2.3% reoperation, 7.8% mortality).
(6,7) Most commonly, intracranial involvement presents as meningitis, however, abscess, lateral sinus thrombosis, and otitic hydrocephalous are all possible sequelae of uncontrolled disease.
Specifically, everolimus is indicated for patients [greater than or equal to] 3 years old with SEGA associated with TSC who require therapy to prevent the development of obstructive hydrocephalous intervention but are not candidates for surgical resection and also in adult patients with renal AML and TSC not requiting immediate surgery (Bissler et al., 2011a; Krueger et al., 2010; Novartis Pharmaceuticals Corporation, 2012).