The septum pellucidum is a thin, two-layered vertical sheet that separates the front parts of the right and left lateral ventricles. It stretches from the underside of the corpus callosum down to the fornix.
| Location | Midline, between the frontal horns and bodies of the lateral ventricles, below the corpus callosum and above the fornix |
|---|---|
| Parts |
|
| Connections | |
| Blood Supply | Anterior cerebral artery (septal branches); Anterior communicating artery perforators |
Acts as a partition between the lateral ventricles and carries some fibres linking the hippocampus and septal area.
A small fluid gap between its layers (cavum septi pellucidi) is normal in newborns and often persists harmlessly, but a large persistent cavum is more common in boxers and others with repeated head impacts. Absence of the septum occurs in septo-optic dysplasia, with poor vision and pituitary problems. Shift of the septum on scans shows midline shift from a mass or bleed.
Developmental absence of the septum with underdeveloped optic nerves and pituitary hormone deficiency.
A fluid space between the layers, usually a normal variant, more common after repetitive head trauma.
This website uses cookies to enhance your experience. Some are essential for site functionality, while others help us analyze and improve your usage experience. Please review your options and make your choice.
If you are under 16 years old, please ensure that you have received consent from your parent or guardian for any non-essential cookies.
Your privacy is important to us. You can adjust your cookie settings at any time. For more information about how we use data, please read our privacy policy. You may change your preferences at any time by clicking on the settings button below.
Note that if you choose to disable some types of cookies, it may impact your experience of the site and the services we are able to offer.
Some required resources have been blocked, which can affect third-party services and may cause the site to not function properly.
This website uses cookies to enhance your browsing experience and ensure the site functions properly. By continuing to use this site, you acknowledge and accept our use of cookies.
