Phakomatous Choristoma of the Orbit With Involvement of the Inferior Oblique Muscle

The authors report a case of phakomatous choristoma presenting as an orbital tumor with involvement of the inferior oblique muscle. This is the only known case of this rare tumor directly invading and incorporating the inferior oblique. This tumor should be included in the differential of eyelid tumors and orbital tumors in infants. Finally, the authors review the histopathological and embryological characteristics of this lenticular tumor.

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