nasopharyngeal stenosis
Introduction
Introduction The nasopharyngeal (nasopharynx) refers to the part above the plane of the sail, which passes through the nasal passage through the nasal passage. Behind the side wall facing the lower turbinate, there is a phary-ngeal opening of the auditory tube, which passes through the middle ear tympanic cavity. In the front, upper and rear of the eustachian tube, there is a curved bulge called a tubal torus. The longitudinal deep fossa between the posterior and the posterior pharyngeal wall of the eustachian tube is called the pharyngeal recess, which is a good site for nasopharyngeal carcinoma. In the mucosa of the upper wall of the nasopharynx, there is a rich lymphoid tissue called pharyngeal tonsil, which is more developed in early childhood. After 6 to 7 years old, it began to shrink, and it was almost completely degraded after 10 years old.
Cause
Cause
Common innate causes.
Examine
an examination
Related inspection
Nasal endoscopy nasopharynx MRI
Endoscopy revealed a narrowing of the nasopharyngeal cavity.
Diagnosis
Differential diagnosis
Nasopharyngeal carcinoma refers to a malignant tumor that occurs in the nasopharyngeal mucosa. China's Guangdong, Guangxi, Fujian, Hunan and other places are more frequent, more men than women. Most of the age of onset is middle-aged, and there are also adolescents. The etiology and ethnic susceptibility (yellow species are more likely than Caucasians), genetic factors and EB virus infection, etc., the degree of malignancy of nasopharyngeal carcinoma is higher, cervical lymph node metastasis can occur in the early stage.
