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How is an ultrasound used to diagnose retinoblastoma?

The ultrasound uses sound waves to create an image. A device is placed directly on the eye to emit and receive sound waves. These high-frequency waves enter the body - in this case, the eye - and bounce off tissue. The ultrasound reads these echoes and turns them into picture. An ultrasound can be particularly useful when a retinoblastoma tumor is large enough to obscure parts of the eye.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.