Microsurgical anatomy of the Liliequist's membrane and surrounding neurovascular territories

Since the original description by Liliequist only a few microanatomical stu dies of the Liliequist membrane have been performed. These studies contain some discrepancies in the description, boundaries, and attachments of the m embrane. Using a surgical microscope the authors examined the microsurgical anatomy of Liliequist's membrane and surrounding neurovascular structures in twenty adult brains injected with silicone rubber, with special emphasis given to the analysis of controversial details. This description is intend ed as an aid for neurosurgeons performing neuroendoscopic procedures.