Abstract
Thyroid-associated orbitopathy is characterised on cross-sectional imaging by symmetric extraocular muscle enlargement sparing the musculotendinous junction. We report a case of this imaging finding in a biochemically euthyroid patient with metastatic squamous cell carcinoma of the lung undiagnosed at time of presentation.
Highlights
Clinical presentation A 63-year-old male presented to the emergency department with an acute episode of blurry vision and two months of headache and intermittent nausea
Symmetric enlargement of all the extraocular muscles with sparing of the myotendinous junctions is a typical feature of Graves disease.[1]
Exophthalmos associated with primary lung malignancy, none to date have been associated with the CT and MRI orbital findings demonstrated in the current case.[2,3]
Summary
Primary right middle lobe malignancy with surrounding likely radiotherapy-related changes (Figure 4). Lymphadenopathy, the absence of new metastatic disease and near complete resolution of the extraocular muscle enlargement (Figure 5)
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