ENHANCED RETROSIGMOID EXPOSURE WITH POSTERIOR SEMICIRCULAR CANAL RESECTION

A subset of patients with acoustic neuromas and useful hearing have tu mors that are inadequately approached by both middle fossa and retrosi gmoid techniques, The enhanced retrosigmoid technique combines the hea ring preservation of posterior semicircular canal ablation to achieve lateral internal auditory canal exposure with the ample cerebelloponti ne angle exposure of the standard retrosigmoid technique.