Onion peel sign
Last revised by Daniel J Bell on 17 Dec 2017
Citation, DOI, disclosures and article data
Citation:
Niknejad M, Bell D, Weerakkody Y, et al. Onion peel sign. Reference article, Radiopaedia.org (Accessed on 18 Apr 2024) https://doi.org/10.53347/rID-21007
rID:
21007
Article created:
28 Dec 2012,
Mohammad Taghi Niknejad ◉
Disclosures:
At the time the article was created Mohammad Taghi Niknejad had no recorded disclosures.
View Mohammad Taghi Niknejad's current disclosures
Last revised:
17 Dec 2017,
Daniel J Bell ◉
Disclosures:
At the time the article was last revised Daniel J Bell had no recorded disclosures.
View Daniel J Bell's current disclosures
Revisions:
7 times, by
5 contributors -
see full revision history and disclosures
Systems:
Sections:
Synonyms:
- Cumbo sign
- Onion peel sign in pulmonary hydatid didease
- Double arch sign (hydatid)
The onion peel sign (also called the Cumbo sign or double arch sign) is a feature seen with complicated pulmonary hydatid cyst in which the gas lining between the endocyst and pericyst has the appearance of an onion peel. It is pathognomonic for a ruptured hydatid cyst.
History and etymology
It was first described by Cumbo in 1921 2.
References
- 1. Polat P, Kantarci M, Alper F et-al. Hydatid disease from head to toe. Radiographics. 2003;23 (2): 475-94. Radiographics (full text) - doi:10.1148/rg.232025704 - Pubmed citation
- 2. Benson CD, Evans WA, Zuelzer WW. Echinococcus cyst of lung exhibiting unusual radiologic and surgical features. Annals of surgery. 117 (2): 268-77. Pubmed