Optic nerve head drusen. High-resolution computed tomographic approach
P. Bec, P. Adam, A. Mathis, Y. Alberge, J. Roulleau and J. L. Arne
Optic nerve head drusen are rare, inherited concretions, which are almost
always calcified; their appearance must be known because they represent one
of the major causes of pseudopapilledema. The computed tomographic (CT)
scan can show small and buried drusen, which are sometimes difficult to
diagnose by the ophthalmoscopic examination. Four cases of drusen (two
bilateral and two unilateral) were confirmed or diagnosed by
high-resolution CT. The CT appearance of drusen is characteristic because
the calcifications are well defined, punctate, and strictly located in the
optic disc. The use of high-resolution CT scanners is very helpful.