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Design: CT and Ultrasound were used to evaluate patients with orbital dermoid cysts in 16 cases were retrospectively analysed.
Result: Ultrasound features were confirmatory of orbital demoid cysts in 4 cases where as CT was effective in diagnosing the condition in 15 cases except for one case of mistaken diagnosis for mucocoele. The characteristic features as fat –floating
sign on CT were revealed in 7 patients.
Conclusion: Ultrasound is useful in displaying internal structures, CT is excellent in detecting the orbital demoid cyst and can more accurately confirm
the diagnosis when the characteristic features as fat
–floating sign is revealed.