1. Provide image anatomy basis of ethmoid sinus for ethmoid sinus surgery.

2. Multiple polyps often from ethmoid sinus, individual polyps much from the maxillary sinus after grow, falling within the nostril called "after nostril polyps."

3. Results Pathological mucosa of maxillary and ethmoid sinus in patients with chronic sinusitis improved both histomorphologically and functionally.

4. To ensure ethmoid sinus and maxillary sinus orifice complete epithelization.

5. Objective To identify and manage the anterior ethmoid sinus overgrowth during dacryocystorhinostomy ( DCR ).

6. The ethmoid sinus is the most common location, followed by the maxillary, frontal, and sphenoid sinuses.

7. Provide image anatomy basis of the ultimate ethmoid sinus for the surgical approach via saddle area.

8. Tumor invasion involved nasal cavity and ethmoid sinus(13 cases), maxillary sinus (12 cases), sphenoid sinus(10 cases), frontal sinus (2 cases), orbit (7 cases).

9. Objective: To explore anatomical variations of the anterior ethmoid sinus in Chinese people and to provide reference for clinical management.

10. "Tear drop" sign seen in the maxillary or ethmoid sinus was a characteristic indirect sign in inferior or medial orbital wall fracture.

11. Conclusion: The imaging anatomic classification of posterior ethmoid sinus has the instructive significance for basicranial surgery and the surgical approach via saddle area.

12. Results Cerebrospinal rhinorrhea 14 from ethmoid sinus, 2 from sphenoid sinus.

13. To explore the treatment methods and long-term effect for early carcinomas of the nasal cavity and the ethmoid sinus.

14. Objective: To explore a feasible method and its significance of 3-dimensional reconstruction in nasal cavity and ethmoid sinus.

15. CT scan was performed and a large tumor mass was noted. The area of the tumor included nasopharyngeal speace. maxillary sinus. ethmoid sinus and cranial fossa.

16. OBJECTIVE To explore the bacteria isolated from middle nasal meatus, maxillary sinus and ethmoid sinus of chronic nasosinusitis patients and their characteristics of antibiotic resistance.

17. The anterior transbasal approach can used to resect tumors involving the sphenoid sinus, posterior ethmoid sinus, and inferior middle clivus.

18. 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%).

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19. Methods 31 cases with orbital blowout fracture who received the orbital restitution through double approaches of the ethmoid sinus under nasal endoscope and the subciliary incision were analyzed.

20. The result shows that CT can display the sub-group and the type of the anterior ethmoid sinus and its adjacent structures clearly.