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Background: Choanal polyps constitute 3-6% of all nasal polyps and are lesions which usually originate from the mucosa of the maxillary sinus and have a solitary growth pattern. Polyps originating from the sphenoid sinus are rarely seen and are known as sphenochoanal polyps. Surgical treatment of the sphenochoanal polyps is its complete excision together with the pedicle and the portion inside the sphenoid sinus.

Cases report: We report the cases of three patients who were referred to the ENT outpatient department for a persistent unilateral nasal obstruction that was resistant to medical treatment. After their clinical and endoscopic examination and imaging evaluation, these patients underwent endoscopic excision of the sphenochoanal polyps which in histopathology were proven to be inflammatory polyps.

Conclusion: Although rarely seen sphenochoanal polyps must be kept in mind in the differential …