Absent septum pellucidum

Last revised by Jeremy Jones ◉ on 18 Dec 2019

Citation, DOI, disclosures and article data

Citation:

Knipe H, Jones J, Fortin F, et al. Absent septum pellucidum. Reference article, Radiopaedia.org (Accessed on 31 May 2023) https://doi.org/10.53347/rID-39731

DOI:

https://doi.org/10.53347/rID-39731

Permalink:

https://radiopaedia.org/articles/39731

rID:

39731

Article created:

17 Sep 2015, Henry Knipe ◉ ◈

Disclosures:

At the time the article was created Henry Knipe had no recorded disclosures.

View Henry Knipe's current disclosures

Last revised:

18 Dec 2019, Jeremy Jones ◉

Disclosures:

At the time the article was last revised Jeremy Jones had no recorded disclosures.

View Jeremy Jones's current disclosures

Revisions:

13 times, by 9 contributors - see full revision history and disclosures

Systems:

Central Nervous System, Paediatrics, Obstetrics

Synonyms:

Absent cavum septum pellucidum
Absence of septum pellucidum
Absence of cavum septum pellucidum

An absent septum pellucidum may rarely be an isolated finding, or more commonly be seen in association with a variety of conditions.

Cavum septum pellucidum is always visualized between 18 and 37 weeks and within a biparietal diameter of 44 to 88 mm. Failure to detect the cavum septum pellucidum within this time interval requires further investigation. However, the absence of cavum septum pellucidum on the ultrasound exam prior to 18 weeks or later than 37 weeks is considered a normal finding.