Fully endoscopic trans-sphenoidal (TNS) gross total resection of a rare granular cell tumour of the neurohypophysis: surgical video and case strategy discussion - D. Gagliano; L. Tariciotti; G. Fiore; L.G. Remore; L. Schisano; R. Accorona; G.A. Bertani; M. Locatelli (Brain and Spine, 2022)