Thyroid associated orbitopathy

Case contributed by Dr Ian Bickle

Presentation

Female Graves disease patient with worsening vision.

Patient Data

Age: 40 years
Gender: Female
Race: Asian
Modality: CT

Bilateral proptosis and enlargement of multiple rectus muscles. Crowding, but not compression of the optic nerve, at the orbital apex.

Modality: Annotated image

Illustration of how the term 'coca cola bottle' sign arises.  ( Courtesy of Matt Skalski).

Modality: MRI

Marked enlargement of the inferior. medial and superior rectus muscles, with sparing of the tendinous insertions, giving a coca-cola bottle appearance.

Case Discussion

Bilateral proptosis due to thyroid associated orbitopathy.  The enlargement of the muscles in this case follow the mnemonic I'M SLOW, which is typically the case.

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Case Information

rID: 24315
Case created: 7th Aug 2013
Last edited: 28th Feb 2016
Inclusion in quiz mode: Included

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