| Abstract: | ![]()
The diaphragma sellae, the pituitary foramen, and the perisellar arachnoid were studied in cadaver sphenoid blocks. Special attention was paid to the dissection of the perforated arachnoid membrane (of Lilliequist). Results were compared with observations made during surgery and with data reported in the literature. The pathophysiology of the intrasellar arachnoid diverticulum, the empty sella syndrome, and the intrasellar arachnoid cyst are discussed. Precise knowledge of the microsurgical anatomy and anatomic variations of the dura mater and arachnoid is imperative for a safe trans-sphenoidal approach to the hypophysis cerebri (pituitary gland) and transcranial approach to the sellar region. |
