Nasopharyngeal CT can generally examine nasopharyngeal structures, such as nasopharyngeal cancer, adenoid hypertrophy, posterior pharyngeal wall and parapharyngeal space abscess and other diseases, in addition to possible CT images may also be able to see sinus lesions. 1. Nasopharyngeal cancer: Nasopharyngeal cancer is a common clinical disease in nasopharynx, which is generally a malignant change of mucous membrane tissues in the posterior and lateral walls of nasopharynx, especially in the pharyngeal crypts, and the CT image usually shows irregular lumps, disappearance of pharyngeal crypts, and the larger tumors can grow in the direction of the posterior nasal aperture, and the morphology of nasopharyngeal cavity is deformed, with asymmetry on both sides. 2. Adenoid hypertrophy: adenoids are located in the parietal wall, posterior wall of nasopharynx and between the pharyngeal fossa on both sides. When adenoid hypertrophy occurs, most of the adenoids have a regular bulge between the pharyngeal fossa on both sides, and the nasopharyngeal cavity is narrowed. 3. Abscess in the posterior pharyngeal wall: there may be low-density swelling shadow in the pharyngeal wall, and some lesions may have air-liquid planes, and there may be ring-shaped enhancement of the peripheral envelope in enhanced CT. 4. Sinus lesions: Nasopharyngeal CT examination, the scanning range can usually also detect sinus cavity lesions, such as sinusitis, sinus cavity polyps. If you have nasopharyngeal discomfort symptoms, it is recommended to consult a doctor in time, for the characterization of nasopharyngeal space-occupying lesions, usually need to be taken under the endoscopic pathology examination.