Inverting papilloma of the nose and paranasal sinuses.

Inverting papilloma is a very uncommon neoplasm; however, its ability to destroy bone, recur after incomplete removal, and undergo malignant transformation makes it an important disease to recognize. Because early diagnosis and prompt treatment offer high rates of cure, it is important to be able to differentiate inverting papilloma from more benign nasal growths such as allergic nasal polyps. This article will summarize the etiology, location, signs, symptoms, potential for malignancy, and current treatment strategies for inverting papilloma.