[Solitary bone cyst. A case of dual mandibular and humeral location].

Among cystic lesions of maxilla the solitary bone cyst always raises diagnostic and etiopathogenic problems. Typically observed as single lesions in maxilla, reports have been published of multiple localizations. Similitudes with solitary cyst of long bones have even been underlined, but no reports exist in the literature of the double localization: maxillary and extra-maxillary. A young man presented mandibular and humeral lesions possessing characteristics of solitary bone cysts.