J Neurol Surg B 2014; 75 - A236
DOI: 10.1055/s-0034-1370642

The Surgical Implications of the Arachnoid Membrane in Skull Base Tumors

Hamad I. Farhat 1, Michael Shinners 1, Ivan Ciric 1
  • 1Evanston, USA

Based on developmental anatomy and microsurgical observations this report will show that Pituitary Adenomas, Meningiomas and Vestibular Schwannomas are extra-Arachnoid lesions. In contrast, Craniopharyngiomas can have a variable relationship to the Arachnoid and Pia Mater. Craniopharyngiomas can be intra-pial adhering to the neuro-ectoderm, and they can be intra- or extra-Arachnoid. These relationships have specific surgical implications that influence outcomes.