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What is the differential diagnosis for an orbital mass?
The differential diagnosis for orbital masses is broad. For more reading please refer to the link of the related articles below.
On the left, there is a 2.5cm x 2.5cm x 2.5cm intraconal mass situated bewteen the optic nerve and lateral rectus. The mass is separate to, but displaces the optic nerve. There is no fat plane between the mass and the lateral rectus, but the belly of lateral recuts is of normal calibre. There is mild proptosis. The lateral orbital wall is normal. The orbital apex is not affected.