Cholesteatoma of maxillary sinus: Mimicking as sinus tumor

Abstract

Paranasal sinuses are normally lined by respiratory mucosa which is pseudostratified ciliated columnar epithelium. Cholesteatoma of paranasal sinus is a condition where respiratory mucosa is either partially or totally replaced by hyperkeratotic squamous epithelium which lead to formation of lamellar sheet of keratin and this condition is known as cholesteatoma. We report one such rare occurrence of maxillary sinus cholesteatoma managed endoscopically.