Chocolate cysts of the orbit.
Acute spontaneous development of proptosis and periorbital ecchymosis may be the presenting sign of an orbital lymphangioma. This benign hamartoma should not be confused with other orbital malignancies.
D002675:Child, Preschool; D006801:Humans; D007223:Infant; D008202:Lymphangioma / Q000175:diagnosis*; D008297:Male; D009918:Orbital Neoplasms / Q000175:diagnosis*