Fig. 25.1 (a) Sagittal and (b) axial preoperative MRI scans showing an invasive extradural sellar chordoma extending to the clivus. This latter T2-weighted image shows the typical inhomogeneous hyperintensity known…

Fig. 27.1 Patient positioning in a recumbent and slight Trendelenburg position (20°), with the head fixed in a Mayfield head-holder Fig. 27.2 Perioperative photos showing endoscopic view of peg drilling…

Fig. 13.1 Schematic drawing showing the mammillary body angle (MBA); MBA is the angle formed by the intersection of a plane tangential to the base of 1 of the mammillary…

Fig. 7.1 The holding arm with endoscope. The arm is positioned arched out of the way from the surgical field, in order not to interfere with the surgeon’s movement A…

Fig. 20.1 Imaging modalities used in workup of meningiomas. (a) T1-weighted magnetic resonance imaging (MRI) with gadolinium-enhanced sequences provides anatomical detail about the location of tumors, as well as their…

Fig. 26.1 Preoperative bony window sagittal CT scan Figs. 26.2 and 26.3 Preoperative MRI scan 26.5 Anatomy of the Approach A precise knowledge of the anatomy of the nose, paranasal…

Fig. 10.1 Contrast-enhanced sellar MRI, sagittal image: typical appearance of a Rathke’s cleft cyst. The cyst has split the pituitary gland: the adenohypophysis has been moved and compressed anteriorly, and…

Fig. 9.1 (a–c) Purely neuroendoscopic, transventricular technique. (a) Puncture of the cyst’s dome and complete drainage of content by aspiration and washing with Ringer’s solution. (b) Perforation of the cyst’s…

Fig. 15.1 After the small dural opening, the cyst content can be drained. *Arachnoid cyst content 15.3 Surgical Treatment of Sellar or Sellar/Suprasellar Arachnoid Cysts When needed, the surgical treatment…

Authors Year No. of patients Technique Dose (Gy) FU (months) Tumor control (%) Late toxicity (%) Carella et al. [9] 1982 57 EBRT 55–60 NA 95 NA Forbes and Goldberg…