1. Endoscopic third ventriculostomy in treating obstructive hydrocephalus.

2. Conclusion Endoscopic biopsy and third ventriculostomy are effective neuroendoscopic procedures in minimally invasive preferential management of pineal region tumors.

3. Results Successful third ventriculostomy, confirmed by MRI, was performed in 9 cases of children with obstructive hydrocephalus. No complications were found in all patients.

4. Methods 35patients who underwent endoscopic third ventriculostomy and63patients who underwent ventriculoperitoneal shunt operation for obstructive hydrocephalus were re viewed.

5. Methods 30 cases were performed with frontal approach interpeduncular system - third ventriculostomy surgery.

6. Objective To elucidate the indication and surgical technique of endoscopic third ventriculostomy in the surgical treatment for hydrocephalus.

7. Methods In 6 hydrocephalic children who failed in V-P shunt operation, neuroendoscopic surgery was performed for shunt tube adjustment, choroids plexus cauterization and third ventriculostomy.

8. To observe special anatomic structure change in the ventricle of obstructive hydrocephalus patients under the neuroendoscope in ventriculostomy.

9. CONCLUSION: Based on data from multiple Canadian centers, age seems to be the primary determinant of outcome in endoscopic third ventriculostomy in pediatric patients.

10. Objective To investigate the roles of endoscopic biopsy and third ventriculostomy in the diagnosis and treatment of pineal region tumors in children.

11. Objective: To provide anatomic basis for better use of third ventriculostomy to treat obstructive hydrocephalus.