Inverted papilloma is a benign tumor that can become malignant. It most commonly develops on the lateral rhinosinusal wall and has a maximum incidence in the ethmoid cells. In most cases, it occurs unilaterally, the main symptom being nasal obstruction. Treatment can generally be performed through endoscopic sinus surgery, involving total resection due to its malignancy potential and risk of recurrence. Given the increased interest in this pathology, we present the most important aspects of sinonasal inverted papilloma, from etiology to therapeutic management, exemplifying with a case from our own experience.