Uveal Osseous Tumors

Choroidal osteoma is formed of cancellous bone and should be differentiated from calcium deposition (i.e., calcification). Dystrophic calcification occurs in dead or degenerated tissues in the presence of normal calcium metabolism. Metastatic calcification, in contrast, occurs in healthy tissues, secondary to hypercalcemia. This chapter describes choroidal osteoma and sclerochoroidal calcification, emphasizing the differentiating features.