Endolymphatic sac tumors (ELSTs) are rare. papillary adenomatous tumors that arise from the endothelium of the endolymphatic sac. We demonstrate a difficult case of endolymphatic sac tumor and how it is managed via transcanal endoscopic assisted technique. with discussion of feasibility of transcanal approach to lateral skull base tumor. https://macorners.shop/product-category/metal-card-holder/