1. Paranasal sinus is not a serious disease, and can be cured with systematic treatment.

2. Mucoceles are encapsulated, expansile fluid collections in the paranasal sinuses which occur due to obstruction of a paranasal sinus ostium.

3. Results Paranasal sinus malignant tumor root mainly in maxillary sinus 17 cases (54.8%), then ethmoid sinus 10 cases (32.3%), and frontal sinus 4 cases (12.9%).

4. Conclusions Paranasal sinus diseases maybe easier to encroach upon the orbit,[/paranasal sinus.html] exophthalmos maybe the first symptom that we can found.

5. Methods CT values in 106 patients with paranasal sinus disease were analyzed comparatively with the findings during the operation of nasal sinus.

6. Is air compartment which in the nose the mirror paranasal sinus surgery must first open.

7. A mucocele is a chronic, benign expansile , and cyst-like lesion of the paranasal sinus which contained inspissated secretion and is limited by the mucosa of the affected cavity.

8. Objective To evaluate the application value of CT scan for paranasal sinus diseases diagnosis.

9. A mucocele is an encapsulated fluid collection which occurs due to obstruction of a paranasal sinus ostium.

10. Objective To study the diagnosis and the therapy for bleeding polyp in paranasal sinus.

11. It is valuable to lower the radiation, especially at the chest, paranasal sinus and child encephalic.

12. OBJECTIVE To improve the CT diagnosis of ossifying fibroma in paranasal sinus.

13. Objective Research for the treatment of recurrent inverted papilloma inside paranasal sinus and nasal cavity.

14. Objective To study the CT, MRI performance and invasion paths outside paranasal sinus malignant tumor.