. Diseases of the nose and throat . Fig. 78.—Dr. Grants case of post-nasal polypus. polypus, while its freedom from pressure within the naso-pharynxenables it to attain a much larger size (Fig. 78). Pathology.—The site of origin of polypus influences its patho-logical character. The ordinary mucous polypus has its origin usuallyalong the summit of the middle meatus between the middle turbi-nated and the external wall, from a pure mucous membrane. As themucosa descends downward over the body of the inferior turbinatedand toward the post-rhinal choana, the fibrous, connective-tissue ele-ments wi
. Diseases of the nose and throat . Fig. 78.—Dr. Grants case of post-nasal polypus. polypus, while its freedom from pressure within the naso-pharynxenables it to attain a much larger size (Fig. 78). Pathology.—The site of origin of polypus influences its patho-logical character. The ordinary mucous polypus has its origin usuallyalong the summit of the middle meatus between the middle turbi-nated and the external wall, from a pure mucous membrane. As themucosa descends downward over the body of the inferior turbinatedand toward the post-rhinal choana, the fibrous, connective-tissue ele-ments within it become more numerous. Hence, the polypus spring-ing from the upper portion of one of the posterior nares, or the (217) 218 DISEASES OF THE PHARYNX. junction of the nose and the naso-pharynx, is composed of a com-bination of both elements, the fibrous preponderating over themucous. Like nasal polypus, the histological definition is that ofloose fibroma, the external wall being of denser texture and moreliberally supplied
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