Isolated sphenochoanal polyp: A rare clinical entity.

Choanal polyps almost always appear as solitary growth and most commonly arise from the maxillary sinus. Isolated polyp originating from the anterior wall of the sphenoid sinus or from its interior and extending as choanal polyp in to the nasopharynx are extremely rare clinical entities. Here we report a 34-year-old male presenting with a history of headache, intermittent nasal discharge and nasal obstruction. A diagnosis of sphenochoanal polyp (SCP) was made on nasal endoscopy and magnetic resonance imaging. The SCP was removed endoscopically via a transnasal sphenoidotomy and histopathologically it was confirmed as inflammatory polyp. In this paper we discuss the clinical presentation and surgical management of this rare clinical entity.