[Ethmoidal-frontal osteomas (report of 9 cases)].

Ethmoido-frontal osteomas, slowly-evolving, benign, bone tumours, are being studied anew, especially from a surgical point of view. Asymptomatic for a long period, they can be detected from bone tumour and ophthalmological manifestations (60% of the cases). An X-ray renders the diagnostic almost certain. ORL access is satisfactory in the great majority of cases, and controlled milling of the osteoma, according to BOURDIAL (1972) is the best means of removal. For the 9 cases observed, post operational follow-up was always straightforward.