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Foreign Body in Globe

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We are continuing in the series of cases regarding trauma.

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So this is the T of vitamin C and D, vascular, infectious,

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traumatic, acquired, metabolic, idiopathic, neoplastic,

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congenital and drugs. In this case,

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as we scroll from top to bottom,

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we note the difference in the shape of the vitreous.

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So, as opposed to the previous case

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where we were more concerned

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about the anterior chamber and its depth,

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in this situation, we are looking at the vitreous.

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The vitreous, as you recall,

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is that portion behind the lens of the

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eye and as one can see in this case,

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you have less depth in the vitreous on the

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right side compared to the left side.

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If one were to use the windowing function,

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one might even be able to state that the density of the

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vitreous is more dense than the vitreous on the left side,

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and hence we have blood within the vitreous humor.

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This does not mean that you should not continue

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to look at the anterior chamber,

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which again appears to be more dense than

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the anterior chamber of the left eye.

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So this patient has both an anterior hyphema,

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that is blood in the anterior chamber, as well as rupture

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of the globe of the vitreous posterior segment,

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as well as blood within the vitreous humor.

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And this can be viewed if one scrolls continuously.

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And we note that the shape of the globe on the right side

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the globe on the left side.

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If we stop on this image,

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we note low density within the anterior

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chamber of the right globe.

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When one has low density in the anterior

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chamber or elsewhere around the globe,

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one has to worry about the potential

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for wood foreign bodies.

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Now, wood can be more dense than CSF or soft tissue,

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particularly if there is leaded wood,

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versus less dense when we have soft wood,

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like balsa wood, for example.

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Foreign bodies associated with the globe is very important

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to identify because it can be a source of infection.

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And globe infection, endophthalmitis, has a natural course

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which can lead to something called phthisis bulbi,

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where the globe shrinks down and calcifies due

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to the chronic infection. In this situation,

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I would report on the anterior hyphema,

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the globe rupture secondary to a foreign body,

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which is likely to represent wood foreign body as opposed

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to metallic foreign body because of the low density.

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And I would include

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the vitreous hemorrhage in this patient.

Report

Description

Faculty

David M Yousem, MD, MBA

Professor of Radiology, Vice Chairman and Associate Dean

Johns Hopkins University

Tags

Trauma

Orbit

Neuroradiology

Neuro

Head and Neck

CT

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