subarachnoid cisterns

sub·ar·ach·noid cis·terns

widening portions of the subarachnoid space within the cranium where the arachnoid bridges over a depression on the surface of the brain; also present in the spinal cord as the lumbar cistern.
Synonym(s): cisternae subarachnoideae [TA]
References in periodicals archive ?
Computerized tomography was repeated and intraventricular fresh hemorrhage was found in occipital horns but not in subarachnoid cisterns (Figure 2).
9,41,45) First, because NCC is a chronic inflammatory disease, seeding of the subarachnoid cisterns results in communicating hydrocephalus, which can be relieved only by shunting.
One reliable variable is the presence of blood or large clots in the subarachnoid cisterns on CT scan.