[Calcifications in leukokorias: ultrasonic study].

We have performed an ultrasound study of 46 eyes with Leucocoria. The results obtained demonstrate that 20 eyes (43.5%) were affected by retinoblastoma. Of these, 17 eyes (85%) showed calcifications and 3 eyes (15%) did not show calcifications. In the remaining 26 eyes, in 6 cases there were intraocular calcifications, and in two of these the calcifications were found within the pathological intraocular mass showing retinoblastoma. The eyes with intraocular calcifications were diagnosed as: uveitis, retrolental fibroplasia, Coats disease, retinal dysplasia. Because of these, we conclude that, although the existence of calcifications is a meaningful datum, there are uncalcified retinoblastomas and calcifications in entities other than retinoblastoma.