Enlargement of Choroidal Osteoma in a Child

Choroidal osteoma is a rare intraocular bony tumor that typically manifests as a yellow-white, well-demarcated mass with geographic pseudopodal margins.1-3 This benign tumor predominantly occurs in the peripapillary or papillomacular region, most often in young women.1,2 Occasionally, choroidal osteoma can simulate an amelanotic choroidal tumor such as melanoma, nevus, or metastasis.1,2 This tumor can also simulate choroidal inflammatory disease such as sarcoidosis, tuberculosis, and other causes of solitary idiopathic choroiditis.2,4 Due to its calcified nature, choroidal osteoma can be confused with sclerochoroidal calcification, a degenerative condition found in elderly patients, located in an extramacular site and associated with serum calcium metabolic disorders.4 Choroidal osteoma can demonstrate growth, particularly into the submacular region, with potential reduction in visual acuity and potential risk for choroidal neovascularization.5 In this article we describe a young child with documented enlargement of choroidal osteoma in the macular region.