A case of giant cell arteritis presenting with nodular posterior scleritis mimicking a choroidal mass.

PURPOSE: Herein we present a case of giant cell arteritis presenting with nodular posterior scleritis and exudative retinal detachment mimicking a choroidal mass.

OBSERVATIONS: A 67-year-old man presented with sudden onset left-sided periorbital pain, blurry vision, and a choroidal lesion in the posterior pole. Despite treatment with high-dose oral prednisone for suspected nodular posterior scleritis mimicking a choroidal mass, the vision in his left eye did not recover, and he developed optic nerve pallor on exam. Further evaluation revealed an ESR of >140 mm/hr (Upper limit of normal = 20 mm/hr), a CRP of 113 mg/L (Upper limit of normal = 9 mg/L), and a temporal artery biopsy consistent with GCA. The patient was started on methotrexate and the oral steroids were slowly tapered.

CONCLUSIONS

Given the potential for GCA to present with scleritis and the potential for nodular posterior scleritis to mimic a choroidal mass, presence of a painful choroidal lesion with optic nerve swelling should prompt an evaluation for GCA to prevent permanent and bilateral vision loss.