Pericallosal cistern

Pericallosal Cistern

The Pericallosal Cistern is a subarachnoid cistern located in the brain, specifically around the corpus callosum, the largest white matter structure in the brain. This cistern is filled with cerebrospinal fluid (CSF), which provides a cushion for the brain, helping to protect it from injury and providing a buoyancy effect.

Anatomy

The Pericallosal Cistern is situated in the midline of the brain, enveloping the corpus callosum. It is continuous with the cisterna magna posteriorly and the interhemispheric fissure anteriorly. The cistern contains the pericallosal arteries, which are the continuation of the anterior cerebral artery after it has passed through the anterior communicating artery.

Clinical Significance

The Pericallosal Cistern is of clinical importance as it is often evaluated in imaging studies of the brain, such as magnetic resonance imaging (MRI) and computed tomography (CT) scans. Changes in the size or shape of the cistern may indicate various pathological conditions, such as hydrocephalus, subarachnoid hemorrhage, or meningitis.

See Also

• Cistern (neuroanatomy)
• Subarachnoid space
• Cerebrospinal fluid