Course and prognosis of bone cystinosis in adolescent and or adults.

The authors refer to their observations on a case reported five years ago. On the basis of electron microscopy findings it was classified as benign bone cystinosis of the adolescent or of the adult. His subsequent clinical recovery, and the present radiographic findings, which show spontaneous and almost complete repair, confirm the validity of the diagnosis and the importance of electron microscopy in the etiology of this rare bone lesion.