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The 10 MHz (top) and 20 MHz (bottom) images of an eye with choroidal osteoma.
Notes: In the 10 MHz image, the ON shadow should not be confused with the acoustic shadow of the brightly reflective and acoustically absorbent osteoma. Note the improved resolution in depiction of the tumor and posterior coats at 20 MHz.
Abbreviation: ON, optic nerve.
