“…Isolated involvement of nearly each individual vestibular end-organ has been reported as an independent variant of AVN. For example, pure ampullary nerve involvement of the horizontal or posterior canals, and isolated utricular lesions have been described ( Blodow et al, 2013 , Guan et al, 2017 , Halmagyi et al, 2002 , Kim and Kim, 2012 , Magliulo et al, 2012 , Manzari et al, 2014 ). Despite this variability, an isolated lesion of the anterior SCC afferents has never been reported, nor did any such cases appear among our data.…”