[The unique trans-fronto-nasal approach. A new approach to benign expansive bone tumors of the anterior floor of the skull base].

We report our experience with a new access route for benign expansive bone tumors of the anterior floor of the skull. From 1991, we used a unique transfrontonasal route, adapted from Raveh's technique for trauma surgery of the anterior floor, to access all tumors in this region. The images presented here show the advantages of this technique: overall vision allows permanent intraoperative control. In addition, the absence functional or esthetic sequelae favor this route for benign tumors.