Surgical treatment of mesial temporal lesions through transsylvian approach

Objective To study the operative indications and effects of surgical treatment of mesial temporal lesions through transsylvian approach(TSA).Method A retrospective analysis of operative outcomes and complications of 26 patients with mesial temporal lesions through TSA between Jul 2005 and Jul 2009 was performed.Results The pathologic changes included 6 cases of cavernous haemangioma,7 glioma,1 gliomatosis and 12 hippocampal sclerosis.2 case of glioma were subtotal removed and the others were total removed.Amygdaloid nucleus was removed and hippocampus was removed 2.5 to 3.0 cm in hippocampal sclerosis cases.Cavernous haemangioma and its surround gliotic plane with hemosiderin were removed together.The complications included visual field deficits in 11 patients (but only 2 patients had symptom of visual field deficits),1 haematoma in operative field,1 oculomotor injury and 1 anterior choroidal artery injury.Conclusions Favorable operative effects could be achived through TSA with low irreversible complication risk for surgical treatment of medsial temporal lesions. Key words: Surgical procedures,operative; Transsyivian approach; Mesial temporal lesions; Mesial temporal epilepsy