[Facial sinuses. Inflammation]

The radiologist must have a thorough knowledge of the normal anatomy and the pathologic spectrum of the paranasal sinuses to in order determine the location and the extent of abnormality and to plan the surgical approach. We describe the normal anatomy and variations such as concha bullosa which can alter nose physiology. Many examples of congenital and inflammatory lesions affecting this region are described, such as naso-sinus polyposis and congenital or inflammatory lesions.