Choroidal osteoma after intraocular inflammation.

A 12-year-old girl had blurred vision and pain behind her left eye for three months. An examination disclosed focal choroiditis and optic nerve edema. Her visual acuity was 20/30. Two similar previous episodes had been diagnosed as scleritis and uveitis and the patient was still on a regimen of 5 mg of prednisone per day and eyedrops containing prednisolone and phenylephrine. A pink choroidal mass superotemporal to the optic disk was negative for calcium by computed tomography and ultrasonography. The corticosteroids were discontinued. Three months later, the patient's visual acuity had improved to 20/20 but the choroidal lesion was slightly larger and two new lesions had appeared, one just above the optic disk and the other superotemporal to the macula. Three years later the two new lesions had coalesced to form one lesion with vascular channels on its surface. Although a choroidal osteoma was suspected, computed tomography and ultrasonography were still negative for calcium. Five years after the initial examination, computed tomography showed a thin ring of calcium within the choroid at the location of the mass. Ultrasonography also confirmed the presence of calcium.