Morphometry and microsurgical anatomy of Bochdalek’s flower basket and the related structures of the cerebellopontine angle

Background Bochdalek’s flower basket (Bfb) is the distal part of the horizontal segment of the fourth ventricle’s choroid plexus protruding through the lateral aperture (foramen of Luschka). The microsurgical anatomy of the cerebellopontine angle, fourth ventricle and its inner choroid plexus is well described in the literature, but only one radiological study has investigated the Bfb so far. The goal of the present study was to give an extensive morphometric analysis of the Bfb for the first time and discuss the surgically relevant anatomical aspects.