For many years the question of the etiology of nasal polypi has received the attention of rhinologists. In a recent publication Kern and Schenck1 gave an excellent survey of the literature and enumerated the theories that have been advanced on the etiology of the so-called mucous polyp. Until recently, chronic nasal infection and sinus suppuration were thought to be the most common etiologic factors, although theories were advanced that polypi were of vascular origin, were due to lymph-vascular disease or were hereditary. More recently, the importance of nasal allergy in the etiology of nasal polypi has been emphasized, and Kern and Schenck found that "mucous polyps are extremely common in allergic conditions of the upper respiratory tract, and that in patients presenting symptoms of non-allergic disease of the upper respiratory tract mucous polyps are comparatively rare, even in the presence of extensive sinus suppuration." Hansel,2 in a comprehensive
WALSH TE, LINDSAY JR. CYTOLOGY OF NASAL POLYPI. Arch Otolaryngol. 1934;20(5):649–658. doi:10.1001/archotol.1934.03600050036002
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