Duplication of the midface.

Facial duplication is one of the rarest forms of craniofacial anomalies. Only a few cases have been reported and described in the literature. We describe here two cases of midfacial duplication, one in a male and the other in a female. Both were examined clinically and radiologically including computed tomographic scanning, with three-dimensional computer reconstruction in the second patient. A histopathological examination was also carried out in both patients for the removed abnormal masses. The embryology of the face, together with the morphopathogenesis and the surgical management and outcome of the two patients, is discussed in detail.