Friday, October 19, 2018

Velum interpositum

https://radiopaedia.org/articles/velum-interpositum

The velum interpositum is a small membrane containing a potential space just above and anterior to the pineal gland which can become enlarged to form a cavum velum interpositum.

Gross anatomy
The velum interpositum is formed by an invagination of pia mater forming a triangular membrane the apex of which points anteriorly.

Boundaries
superiorly: the columns of the fornices and hippocampal commissure (psalterium) reaching as far forward as the foramen of Monro
inferiorly: the internal cerebral veins and tela choroidea of the third ventricle
inferolaterally: the thalamus
posteriorly: the narrow base of the triangle abuts the splenium of the corpus callosum 1

It varies in shape from persion to person, sometimes interposed between the internal cerebral veins and splenium, and depending on whether or not there is a cavum vergae (in which case the columns of the fornices are displaced inferiorly, narrowing the velum interpositum).

When somewhat distended by fluid it forms a small triangular (in axial section) space and is referred to as a cavum velum interpositum. If larger and exterting mass effect it is known as a cavum velum interpositum cyst.

Image result for velum interpositum

1 comment:

  1. Neurology Treatment Cost - Get neurology treatment in India at affordable cost. India has top neurosurgeons and best hospitals for treatment of neurology and brain problems. Neurology treatment mainly focuses on diagnosing and managing disorders of the brain, spinal cord, and nerves. Visit: Brain Surgery Cost

    Best Neurology Hospitals in India

    Best Neurologists in India

    Healthcare Tourism Company

    ReplyDelete