Enlarged extraocular muscles as the presenting feature of acromegaly.

: The authors report the case of a 32-year-old woman who presented with bilateral lower eyelid swelling and extraocular muscle enlargement as the initial manifestation of acromegaly. The acromegaly, however, was not diagnosed until 6 years after her symptoms began. Acromegaly should be entertained in the differential diagnosis of any patient who presents with bilateral, symmetrical extraocular muscle enlargement on computed tomographic scan, especially in the patient with normal thyroid hormone levels and no clinical findings associated with thyroid orbitopathy.