Y sign (epidural lipomatosis)

Last revised by Mostafa El-Feky ◉ on 9 May 2023

Citation, DOI, disclosures and article data

Citation:

Dixon A, El-Feky M, Bell D, et al. Y sign (epidural lipomatosis). Reference article, Radiopaedia.org (Accessed on 31 May 2023) https://doi.org/10.53347/rID-30345

DOI:

https://doi.org/10.53347/rID-30345

Permalink:

https://radiopaedia.org/articles/30345

rID:

30345

Article created:

4 Aug 2014, Andrew Dixon ◉

Disclosures:

At the time the article was created Andrew Dixon had no recorded disclosures.

View Andrew Dixon's current disclosures

Last revised:

9 May 2023, Mostafa El-Feky ◉

Disclosures:

At the time the article was last revised Mostafa El-Feky had no financial relationships to ineligible companies to disclose.

View Mostafa El-Feky's current disclosures

Revisions:

5 times, by 4 contributors - see full revision history and disclosures

Systems:

Central Nervous System, Spine

Sections:

Signs

Tags:

refs, spine

Synonyms:

Y sign in epidural lipomatosis

The Y sign refers to a common appearance in lumbar epidural lipomatosis where excess fat in the extradural space compresses the dural sac into the shape of the letter "Y".

NB: Y sign also refers to the appearance of incudomalleolar disarticulation on CT, more commonly known to radiologists as the broken heart sign.