Which of the enlarged extraocular muscles in thyroid eye diseases has a more compressive effect on the optic nerve?
Superior rectus muscle-levator palpebral muscle complex.
Which MRI sequence can differentiate the early stage of thyroid eye disease?
STIR MRI sequence.
Remarkable and diffusely increased thickness of extraocular muscles, more prominently the inferior and medial rectus muscles, orbital apical crowding with impression on optic nerve sheath complex in both sides, and also remarkable bilateral proptosis.
There is also increased orbital fat content and relatively enlarged lacrimal glands with prolapse of the gland. Preseptal and lideyelid soft tissue swelling and anterior bulge. Some foci of fluid and thick mucosa in related paranasal sinuses are also noted.
Based on the laboratory exam findings, the patient is suffering from Graves disease.