A morphometric and analytical cadaver dissection study of a tumor-simulation balloon model

Publication date: March 2018 Source:Journal of Clinical Neuroscience, Volume 49 Author(s): Baran Bozkurt, Evgenii Belykh, Kaan Yağmurlu, Abhishek Agrawal, Steve W. Chang, Michael S. Staren, Robert F. Spetzler, Joseph M. Zabramski, Mark C. Preul We quantified the effects on anatomical cadaver dissection of a balloon-inflation tumor model positioned in the parasellar region and approached through an orbitozygomatic (OZ) craniotomy. A modified supraorbital OZ was performed bilaterally on 5 silicon-injected cadaver heads. Ten predetermined anatomical points assigned using a frameless stereotactic device were used to measure the working area of exposure, degree of surgical freedom, and horizontal and vertical angles of attack to specific target points before and after inflation of a balloon catheter mimicking a parasellar tumor. Balloon inflation displaced the central anatomical structures (pituitary stalk, lamina terminalis, anterior chiasm, and internal carotid artery [ICA]–posterior communicating artery and ICA-A1 junctions) by 14–51% (p ≤ .05). With tumor simulation, the vertical angle of attack increased by 67% (p < .01), while the area of exposure increased by 83% (p < .01) and surgical freedom increased by 58% (p < .01). This tumor model also significantly displaced central anatomical sella-associated structures. Compared to a normal anatomical configuration, the tumor simulation (balloon) opened surgical corridors (esp...
Source: Journal of Clinical Neuroscience - Category: Neuroscience Source Type: research