Orbital teratoma is a rare, vision-threatening, congenital neoplasm derived from all germ cell layers. The management of orbital teratoma is uncertain because of its rarity and variable severity. We present a case with complete tumor excision with preservation of vision and cosmesis. A 4-day-old female presented with progressive proptosis of the OD. She was born term following an uneventful pregnancy and delivery. MRI of the orbits showed a large right-sided mass centered within the intraconal space with heterogeneous signal intensity characteristics consistent with a teratoma. She underwent a right posterior orbitotomy. The tumor was wrapped around the optic nerve but was gradually separated from it and all other normal structures and delivered intact. Histology was compatible with an immature teratoma without evidence of malignancy. The patient is now 6 months old, visually attentive with no evidence of optic neuropathy, and has essentially normal appearance.
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