[Gardner's syndrome: a case report].

The Gardner syndrome (GS) is a dysplasia in which neoformations in the intestines, soft tissue and osseous tissue are associated. Since extra-intestinal manifestations, in particularly osteomas, appear promptly even in infants, and above all in the light of the possibility of malignant degeneration, the presence of mandibular osteomas indicates the necessity of carrying out investigations in order to ascertain the eventual existence of an intestinal polyposis typical of GS. This study describes a typical case of GS diagnosed merely upon suspicion of the existence of the syndrome in a patient who came to our Department with a mandibular osteoma. The study underlines the importance not only of carrying out investigations in order to ascertain the presence of GS (rectocolonoscopy), but also that of studying the relatives of the patient in light of the fact that this particular dysplasia is transmitted genetically.