Question
A female age 48 yrs, presents with the condition as shown in the picture below. There is no redness or pain. Investigation of choice is ?
A. T3&T4 measurements to rule out thyrotoxicosis.
B. CT scan to rule out meningioma.
C. Doppler to rule out hemangioma.
D. USG to rule out orbital pseudotumor.
Show Answer
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Correct Answer » A
Explanation
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The condition shown in the picture above represents unilateral proptosis.
All of the above conditions can cause proptosis. But, Graves’ ophthalmopathy is the most common cause of unilateral or bilateral proptosis in adults or children. Orbital inflammation and engorgement of the extraocular muscles, particularly the medial rectus and the inferior rectus, account for the protrusion of the globe.
The accompanying upper eyelid retraction, manifesting as disproportionately greater exposure of sclera superiorly than inferiorly, and lid lag, manifesting as impaired descent of the upper eyelid on downward gaze, distinguishes it from other causes of proptosis.
