File:Onyx® Embolization - Skin of Scalp (49740400212).jpg
![File:Onyx® Embolization - Skin of Scalp (49740400212).jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/7/7e/Onyx%C2%AE_Embolization_-_Skin_of_Scalp_%2849740400212%29.jpg/800px-Onyx%C2%AE_Embolization_-_Skin_of_Scalp_%2849740400212%29.jpg?20210215194223)
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Summary
editDescriptionOnyx® Embolization - Skin of Scalp (49740400212).jpg |
Onyx® is a non-adhesive liquid intravascular embolic agent comprised of EVOH (ethylene vinyl alcohol) copolymer dissolved in DMSO (dimethyl sulfoxide), and suspended micronized tantalum powder to provide contrast for visualization under fluoroscopy. It is usually used for treatment of arteriovenous malformations. The DMSO solvent dissipates into the blood, causing the EVOH copolymer and suspended tantalum to precipitate in situ into a spongy, coherent embolus. This material may produce vascular and perivascular inflammation, angionecrosis and a foreign body giant cell reaction. Recanalization occurs in a very small percentage of cases. These images show a necrotic eschar on the scalp of a man who underwent a brain tumor resection. Some vessels are filled with Onyx® which appears as a a black, granular material. Reference - <a href="https://www.ncbi.nlm.nih.gov/pubmed/19326974" rel="noreferrer nofollow">www.ncbi.nlm.nih.gov/pubmed/19326974</a> Images and reference contributed by Dr. Irene Carretero – @IreneCarretero |
Date | |
Source | Onyx® Embolization - Skin of Scalp |
Author | Atlas of Medical Foreign Bodies |
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This image was originally posted to Flickr by Y. Rosen, MD at https://flickr.com/photos/158161000@N04/49740400212. It was reviewed on 15 February 2021 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-sa-2.0. |
15 February 2021
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current | 19:42, 15 February 2021 | ![]() | 960 × 384 (161 KB) | Netha Hussain (talk | contribs) | Transferred from Flickr via #flickr2commons |
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Horizontal resolution | 96 dpi |
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Software used | ACDSee Standard 2019 |
File change date and time | 17:13, 5 April 2020 |
Y and C positioning | Centered |
DateTime subseconds | 867 |