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The authors noted that this form would previously have been classified as simply mega–cisterna magna. [ 2 ] [ 6 ] In 1999, Calabró et al. first used the phrase Dandy–Walker continuum when referring to proposals that a condition known as Blake's pouch cyst falls under the umbrella of the Dandy–Walker complex proposed by Barkovich. [ 3 ]
The cisterna magna (posterior cerebellomedullary cistern, [1] or cerebellomedullary cistern [2] [3]) is the largest of the subarachnoid cisterns.It occupies the space created by the angle between the caudal/inferior surface of the cerebellum, and the dorsal/posterior surface of the medulla oblongata (it is created by the arachnoidea that bridges this angle [3]).
Cisterna magna also called cerebellomedullary cistern - the largest of the subarachnoid cisterns. It lies between the cerebellum and the medulla oblongata. It receives CSF from the fourth ventricle via the median aperture (foramen of Magendie). The cisterna magna contains: The vertebral artery and the origin of the posterior inferior cerebellar ...
Patients with arachnoid cysts may never show symptoms, even in some cases where the cyst is large. Therefore, while the presence of symptoms may provoke further clinical investigation, symptoms independent of further data cannot—and should not—be interpreted as evidence of a cyst's existence, size, location, or potential functional impact on the patient.
Its floor is formed by the arachnoid membrane extending between the temporal lobes of either side. [2] Anteriorly, it extends to the optic chiasm. [1] The cistern communicates superiorly with the chiasmatic cistern, and inferiorly with the pontine cistern. [3]
The angle formed in turn creates a subarachnoid cistern, the cerebellopontine angle cistern. The pia mater follows the outline of the fissure and the arachnoid mater continues across the divide so that the subarachnoid space is dilated at this area, forming the cerebellopontine angle cistern. [citation needed]
Each ambient cistern extends anterolaterally around the mesencephalon to become continuous rostrally/anteriorly with the interpeduncular cistern. [2] Each ambient cistern is continuous dorsally/posteriorly with the quadrigeminal cistern; [3] [4] inversely, each ambient cistern is an anterolateral extension of the quadrigeminal cistern on either side [2] (some sources define the quadrigeminal ...
The cistern of lateral cerebral fossa [1] (also cistern of the lateral sulcus, or Sylvian cistern [2]) is an elongated [3] subarachnoid cistern formed by arachnoid mater bridging the lateral sulcus between the frontal, temporal, and parietal opercula.