are benign tumors caused by human papillomavirus (HPV) that usually arise on the lateral nasal wall They present with unilateral nasal obstruction and occasionally hemorrhage They are often easily seen on ante rior rhinoscopy as cauliflower-like growths in or around the middle meatus Because squamous cell carcinoma is seen in about 10% of inverted or schneiderian papillomas, complete excision is strongly recommended This usually requires a medial maxillectomy, but in selected cases an endoscopic approach may be possible Because recurrence rates for inverted papilloma are reported to be as high as 20%, subsequent clinical and radiologic follow-up is imperative All excised tissue (not just a portion) should be carefully reviewed by the pathologist to be sure no carcinoma is present >