Fig. 4From: Stereotactic cryoablation of large tumors of the sellar region with intraoperative CT scans—technical notea–c Scans show a large craniopharyngioma with a very large supra-sellar extension. d The cyst showed an enhancing lump on the posterior wall and e shows probe-tip at the posterior wall of the cyst with a black void around it. f CT scans 4 months after treatment shows a collapse of the cystBack to article page