Huge congenital teratoma containing tooth in a three-day-old neonate.

Congenital teratoma is a rare cause of congenital proptosis. A full term three-day-old male child was presented with massive unilateral swelling in the left orbit, which was noted since birth. Diagnosis of orbital teratoma without intracranial extension was made based on clinical examination and imaging. Lid-sparing exenteration of the left orbit was done. Histopathological examination confirmed the diagnosis of cystic teratoma. Congenital orbital teratoma with a tooth and mature elements of all the three germ cell layers is reported due to its extreme rarity.