[Giant cell lesions of the maxilla disclosing primary hyperparathyroidism]. / Lésions à cellules géantes des maxillaires révélatrices d'hyperparathyroïdie primaire.

We report 2 cases of giant-cell lesions of the maxilla in two female patients aged 42 and 22 years. The initial diagnosis was giant-cell tumor and giant-cell repair granuloma. The diagnosis of brown tumor was established at discovery of primary hyperparathyroidism. We emphasize the importance of searching for hyperparathyroidism in patients with a giant-cell lesion of the maxilla.

[Neurosarcoma of the submandibular gland arising in a pleomorphic adenoma. Apropos of a case]. / Neurosarcome de la glande submandibulaire développé sur un adénome pléomorphe. A propos d'un cas.

A 71-year-old woman consulted for a tumor of the right submandibular gland that had been present for 4 years and had rapidly increased in size during the last two months. Histological examination of frozen sections and immunohistochemistry concluded to a poor differentiated sarcoma probably a neurosarcoma with residual pleomorphic adenoma component. In spite of wide resection, local recurrences with nodes and lung metastases occurred leading to the death of the patient. We think interesting to report this unusual salivary tumor and to discuss its pathological features.