An Unusually Large Choanal Polyp that Almost Completely Obstructed the Oropharyngeal Airway

Yanagisawa E , Salzer SJ , Hirokawa RH . Endoscopic view of antrochoanal polyp appearing as a large oropharyngeal mass. Ear Nose Throat J 1994;73:714–15.

Yanagisawa K , Ho SY , Yanagisawa E. Endoscopic view of a sphenochoanal polyp. Ear Nose Throat J 2000;79:546–8.

Gustafson RO , Neel HB III . Cysts and tumors of the nasopharynx. In Paparella MM , ed. Otolaryngology. 3rd ed. Philadelphia: W.B. Saunders, 1991.

Yanagisawa E , Hirokawa R , Yanagisawa K. Endoscopic view of nasopharyngeal carcinoma. Ear Nose Throat J 1994;73:12–14.

Yanagisawa E , Citardi MJ . Endoscopic view of malignant lymphoma of the nasopharynx. Ear Nose Throat J 1994;73:514–16.