[Comparative evaluation of echography and C.A.T. in diagnosing retinoblastoma].

The comparative efficiency of sonography and computerised axial tomography on the diagnosis of retinoblastoma was assessed in 8 consecutive cases. Ocular echography revealed a 100% sensitivity whereas CT scans gave false negatives in 2 out of the 8 cases (80% sensitivity). The value of ultrasound scanning as the diagnostic test of first choice for suspected retinoblastoma is therefore emphasised.