[Mandibular arteriovenous angioma and the circumstances of discovery: fissuration syndrome]. / Angiomes artério-veineux mandibulaires et circonstances de découverte: le syndrome de fissuration.

We report a case of high-flow mandibular arteriovenous angioma which was remarkably silent. In our experience, embolization or surgical repair must be as distal as possible. Together with other authors, we believe that to be successful embolization treatment should associate hyperselective embolization via an arterial route and transcutaneous puncture embolization to dry the bed of the mandibular arteriovenous angioma.

[Basal-cell nevomatosis. A new case with involvement of the whole basis mandibulae]. / Naevomatose baso-cellulaire. Un nouveau cas avec atteinte de toutes les bases osseuses maxillaires.

A case is presented of a young woman with basal cell nevomatosis in whom a cystic localization had been unrecognized initially. Emphasis is placed on the need for computed tomography investigation of possible extension and to ensure absence of postoperative recurrence. Cutaneous nevi should be excised immediately after diagnosis.

[Bilateral sclerosis of the submaxillary glands secondary to orthodontic treatment]. / Sclérose bilatérale des glandes sous-maxillaires secondaire à un traitement orthodontique.

A hitherto unreported complication of orthodontic treatment secondary to the insertion of an inferior lingual arch: bilateral sclerosis of submandibular glands.

[Reparative giant cell granuloma]. / Le granulome réparateur à cellules géantes.

The authors report a case of voluminous giant cell reparative granuloma of the symphysis menti. They review the essential features of this lesion which was baptized by Jaffe. Although the term reparative is often contested, it refers to its real bone-forming potential. The diagnosis is most often confused with brown tumours of the parathyroid glands and cherubism. Although this lesion has a good prognosis, a full phosphorus-calcium survey including parathormone assay should be performed whenever there is doubt.

[Should an odontoma be considered as a developing tumor?]. / L'odontome peut-il être considéré comme une tumeur évolutive?

The authors review the classification of these odontogenic epithelial tumours and propose the hypothesis of a direct relationship between the ameloblastic odontoma and the complex odontoma, which represents the advanced stage of the first tumour. Thus, the odontoma can be considered to be an evolutive tumour. This hypothesis is illustrated by a case report which was associated with confusion concerning the histology. Similar cases in the literature show that the same lesion is described by a variety of names. Ameloblastic odontoma is the most logical terminology and should be the only one used. The appearance of differentiation towards the production of dental tissue in an ameloblastic type of tumour is therefore a good prognostic factor. These tumours predominantly occur in the posterior zones of the bony bases and are usually discovered between the ages of 10 and 30 years.