Anaplastic carcinoma of the paranasal sinuses presenting as a nasal polyp.

Nasal polyps are benign oedematous outgrowths of respiratory mucosa which frequently present to the clinician as a cause of nasal obstruction. Though nasal and sinus polyps are not true neoplasms, long -standing inflammation can lead to metaplastic changes on the surface of the mucosa, and occasionally even to carcinoma. We report a case who presented with typical findings of nasal polyposis, but was eventually found to have a malignant neoplasm of the paranasal sinuses.