1, Objective : To discuss the effects of morphine extradural acesodyne through pre using indomethacin suppository before operation.

2, To observe the effects of extradural prednisone injected for postoperative analgesia in spinal column surgery.

3, Methods The 18 cases of extradural cysts at sacra confirmed by operation were retrospectively analyzed on the aspects of clinical symptom, sign , imaging manifestation and treatment.

4, Conclusion A multi - cystic mass in extradural intraspinal canal may prompt the diagnosis of lymphangioma.

5, Results On MRI, extradural arachnoid cyst was demonstrated in 4, sacral arachnoid cyst in 42, extradural arachnoid neurilemma cyst in 10 and spinal subdural arachnoid cyst in 3 cases.

6, Results: The major CT findings after surgery included extradural fibrosis, recurrent disk herniation, lumbar spinal stenosis and adhesive arachnoiditis.

7, Methods: Using thoracic part extradural block to 56 DCM patients for 4 ~8 weeks.

8, Objective:To observe the efficacy of extradural catheter intubatton and washing with mitomycin C and Chymotrypsin in the treatment of lacrimal duct obstruction.

9, Objective : To report 20 cases of giant invasive adenomas resected via the extended subfrontal extradural approach.

10, To evaluate CT and MRI for the diagnosis of cranial extradural empyema.

11, A case of glomangioma located at an unusual site, the extradural space of the cervical spine,[http:///extradural.html] is presented.

12, Conclusion CT scan is a preferred investigative modatity to diagnose traumatic posterior fossa extradural hematoma.

13, Objective To discuss the cli ni cal manifestations and the imaging characteristics of extradural cysts at sacra, so as to improve their diagnosis and treatment.

14, Objective To evaluate the curative effects of minimally invasive trepanation and drainage for traumatic extradural hematoma.

15, Objective: To report 20 cases of giant invasive pituitary adenomas resected via the extended subfrontal extradural approach.

16, This occurred in a 69-year-old woman who was subsequently treated with a subtemporal, extradural exploration and packing of the multiple defects in the mastoid air cells.

17, Methods The clinical data, operative methods and therapeutic efficacy of the 15 cases with extradural hematoma treated with minimally invasive trepanation and drainage were analyzed retrospectively.

18, Objective : To explore the operative time and mode of extradural hematoma straddle superior sagittal sinus.

19, Results:18 cases were located in intradural -extramedullary space, 1 case in extradural space.