Thyroid-associated orbitopathy

Case contributed by Ammar Haouimi
Diagnosis probable

Presentation

Bilateral proptosis.

Patient Data

Age: 18 years
Gender: Female

 The CT demonstrates bilateral and symmetrical enlargement of the extraocular muscles with enhancement, sparing their tendinous insertions. Normal thickness and density of both optic nerves. No intra-or extraconal lesion is seen.

Normal pneumatization of the paranasal sinuses.

Annotated image

The interzygomatic line (a line that connects the anterior edges of the zygomatic bones) is in contact with the posterior margin of both globes, in keeping with bilateral proptosis grade 2.

Case Discussion

Bilateral proptosis with bilateral and symmetrical enlargement with enhanement of the extraocular muscles with bilateral proptosis, indicating probably a thyroid-associated orbitopathy.

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