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Citation:
Amer M, Elfeky M, Sharma R, Flat tyre sign (globe rupture). Reference article, Radiopaedia.org (Accessed on 12 Dec 2024) https://doi.org/10.53347/rID-184354
The flat tyre sign, also known as the mushroom sign, is one of the most specific signs of ruptured eye globe, due to the similarity between the abnormal contour of injured globe and the appearance of a flat tyre 1. It is classically described on CT but may be seen on ultrasound or MRI 2.
The most specific CT signs for globe injuries are abnormal globe contour and vitreous hemorrhage 1,3. Intra-ocular air and presence of foreign bodies are good predictors for globe injuries if associated with other features in patients with ocular trauma 1,2.
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1. Zhou Y, DiSclafani M, Jeang L, Shah A. Open Globe Injuries: Review of Evaluation, Management, and Surgical Pearls. Clin Ophthalmol. 2022;16:2545-59. doi:10.2147/OPTH.S372011 - Pubmed
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2. Sevel D, Krausz H, Ponder T, Centeno R. Value of Computed Tomography for the Diagnosis of a Ruptured Eye. J Comput Assist Tomogr. 1983;7(5):870-5. doi:10.1097/00004728-198310000-00022 - Pubmed
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3. Chronopoulos A, Ong J, Thumann G, Schutz J. Occult Globe Rupture: Diagnostic and Treatment Challenge. Surv Ophthalmol. 2018;63(5):694-9. doi:10.1016/j.survophthal.2018.04.001 - Pubmed
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