Imaging of sinonasal inverted papillomas: A literature review.

The sinonasal inverted papilloma is a rare benign tumor which is distinguished from the other sinonasal tumors by some characteristics such as a slow developement, local aggressiveness, a high rate of recurrence after surgical resection and the possibility of malignant transformation. It should be considered in the presence of any unilateral polypoid symptomatology or lesion. Its treatment is surgical. In this update, we discuss the radiological specificities of sinonasal inverted papillomas as well as the contribution of imaging in the diagnosis and post-treatment monitoring of these tumors.