[Benign tumors and pseudotumor of the maxilla in children]

The underlying causes in series of benign tumours and pseudo-tumours and cysts of the maxillary bone observed in children over a ten-year period in the Saint-Vincent-de-Paul Hospital in Paris are reported. Besides the frequently encountered odontogenic cysts, most cases involved aneurysmal cysts and benign odontogenic tumours, as well as rare tumours including a hydatic cyst. Several lesions were discovered on a panoramic X ray performed for orthodontal survey.