[Paranasal sinuses: postoperative imaging].

Radiologic assessment after sinus surgery requires not only a good knowledge of the primary disease, but also a mandatory understanding of every surgical technique and approach. After having described these techniques, we will illustrate immediate, possible but rare, post-operative complications. The various pathologies responsible for a delayed recurrence will also be illustrated. A chapter will be dedicated to paranasal sinuses malignant tumors follow up after surgery.