Glial Periorbital Heterotopia: A Rare Type of Ocular Mass

Congenital orbital masses are rare disorders. A wide variety of lesions, including malignant and benign tumors, may develop around the orbit; hemangioma, lymphangioma, and optic nerve meningioma are the most common. Counseling for the prognosis and postnatal treatment depends on antenatal suspicion. Glial heterotopia should also be considered for the differential diagnosis. Integration of antenatal ultrasound and magnetic resonance imaging characteristics could help in the differential diagnosis. For the first time to our knowledge, a literature review on fetal orbital tumors was performed, along with a systematic description of imaging characteristics, treatment, and the prognosis.