Resection of tumors in pineal region and posterior third ventricle via occipital interhemispheric transtentorial approach
Objective:To investigate the clinical effect of resection of pineal region and posterior third ventri-cle tumors via occipital interhemispheric transtentorial approach.Methods:The clinical data of 12 pa-tients with the pineal region and posterior third ventricle tumors from May 2019 to January 2022 were re-trospectively studied,and the clinical curative effect was observed.Results:Pathological results showed that there were 3 cases of germ cell tumor(including 2 cases of single germinomas),2 cases of astrocytoma,1 case of glioblastoma,2 cases of pineocytomas,3 cases of epidermoid cysts,and 1 case of small cell neuroendocrine carcinoma(lung origin).Total tumor resection was performed in 10 cases(83.3%)and subtotal resection in 2 cases(16.7%).All cases were survived after operation.Among the 12 cases,5 cases underwent extraventricular drainage by drilling before tumor resection,and after tumor resection,they underwent a third ventriculostomy or endplate ostomy to relieve hydro-cephalus(2 of them underwent endoscopic ostomy).One patient still had hydrocephalus after the oper-ation,which was treated by a ventriculoperitoneal shunt(VPS).Conclusion:The occipital interhemi-spheric transtentorial approach can effectively remove the tumors in the pineal region and posterior part of the third ventricle.After the tumors are removed,the third ventriculostomy or endplate osto-my can be used to relieve hydrocephalus,which is worthy of promotion.
Pineal Region TumorsPosterior Third Ventricle TumorsSurgical ApproachMicrosurgery
NETL
NSTL
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