Abnormality of the orbital region Orbital inflammation 2024-03-29T17:23:48Z An inflammatory condition localized to the orbit, presenting capillary dilatation, leukocytic infiltration, redness, heat, and pain. CT or MIR Imaging demonstrates enlargement of the muscle belly of one (or more) extraocular muscles typically with the involvement of tendinous insertions. Inflammation can also be observed in surrounding tissues, including the orbital fat, lacrimal gland, and optic nerve sheath.