Cavum septum pellucidum

Cavum septum pellucidum

Cavum septum pellucidum (CSP) describes a septum pellucidum that has a separation between its two leaflets (septal laminae). This cavity contains cerebrospinal fluid (CSF) that filters from the ventricles through the septal laminae [cite journal |author=Oteruelo F |title=On the cavum septi pellucidi and the cavum Vergae |journal=Anatomischer Anzeiger |volume=162 |issue=4 |pages=271–8 |year=1986 |pmid=3813041] .

CSP is bounded anteriorly by the genu of the corpus callosum; superiorly by the body of the corpus callosum; posteriorly by the anterior limb and pillars of the fornix; inferiorly by the anterior commissure and the rostrum of the corpus callosum; and laterally by the leaflets of the septum pellucidum [cite journal |author=Born C, Meisenzahl E, Frodl T, Pfluger T, Reiser M, Möller H, Leinsinger G |title=The septum pellucidum and its variants. An MRI study |journal=European archives of psychiatry and clinical neuroscience |volume=254 |issue=5 |pages=295–302 |year=2004 |pmid=15365704 |doi=10.1007/s00406-004-0496-z] .

The most common type of CSP is noncommunicating, that is, it does not connect to the brain's ventricular system. Because of this lack of communication, the erstwhile term for CSP, the "fifth ventricle," is not anatomically correct and its use has fallen out of favor in recent years.

CSP is present in 100% of fetuses, but over 85% of them fuse by 3–6 months of age [cite journal |author=Farruggia S, Babcock D |title=The cavum septi pellucidi: its appearance and incidence with cranial ultrasonography in infancy |journal=Radiology |volume=139 |issue=1 |pages=147–50 |year=1981 |pmid=7208915] . It has been loosely associated with schizophrenia, post-traumatic stress disorder, and chronic brain trauma [cite journal |author=May F, Chen Q, Gilbertson M, Shenton M, Pitman R |title=Cavum septum pellucidum in monozygotic twins discordant for combat exposure: relationship to posttraumatic stress disorder |journal=Biol. Psychiatry |volume=55 |issue=6 |pages=656–8 |year=2004 |pmid=15013837 |doi=10.1016/j.biopsych.2003.09.018] [cite journal |author=Galarza M, Merlo A, Ingratta A, Albanese E, Albanese A |title=Cavum septum pellucidum and its increased prevalence in schizophrenia: a neuroembryological classification |journal=The Journal of neuropsychiatry and clinical neurosciences |volume=16 |issue=1 |pages=41–6 |year=2004 |pmid=14990758] [cite journal |author=Zhang L, Ravdin L, Relkin N, Zimmerman R, Jordan B, Lathan W, Uluğ A |title=Increased diffusion in the brain of professional boxers: a preclinical sign of traumatic brain injury? |journal=AJNR. American journal of neuroradiology |volume=24 |issue=1 |pages=52–7 |year=2003 |pmid=12533327] .

References in movies

*In "Rocky V", Rocky Balboa is notified he has Cavum septum pellucidum.

ee also

* Cavum vergae
* Cavum velum interpositi

External links

* [ Mypacs scan by Rolando Reyna, Radiologist, Hospital Santo Tomas, Panama.] Good image, but text is incorrect and not referenced.


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