[Colobomatous cyst of the orbit in congenital microphthalmos].

Colobomatous orbital cyst with microphthalmos is an anomaly of the orbital contents occurring during embryogenesis. In this study, we report the case of a 3 year-old child referred with the initial diagnosis of voluminous orbital angioma. Radiological investigations and histological study of the ablated mass established the correct diagnosis of colobomatous cyst. Pathogeny, diagnostic and therapeutic problems are discussed.