Choroidal Osteoma
J. D. Gass, R. K. Guerry, R. L. Jack and G. Harris
Choroidal osteomas caused visual symptoms in four healthy young women. A
positive 32P test led to enucleation and histopathologic confirmation of
the diagnosis in one patient. The characteristic ophthalmoscopic findings
in these patients included the following: (1) slightly and irregularly
elevated, yellow-white, juxtapapillary, choroidal tumor and well-defined
geographic borders; (2) diffuse and mottled depigmentation of the overlying
pigment epithelium; and (3) multiple small vascular networks on the tumor
surface. A diffuse mottled pattern of hyperfluorescence in the area of the
tumor occurred during the early and later stages of angiography. The tumors
were ultrasonically dense, and the orbital tissue behind them was rendered
silent. The tumors were visible on routine orbital x-ray films and
computerized tomograms. The latter study demonstrated the tumors as having
the consistency of normal bone.
