Intraosseous Hemangioma of Sella: Case Report and Review of Literature.

Background: Primary intraosseous hemangioma (PIH) of the skull base, when localized in the sella, is a rare, benign lesion that can mimic other common sellar tumors. Such tumors may be asymptomatic incidental radiologic findings or present with nonspecific symptoms (e.g.

Endoscopic and Microscopic Extended Subfrontal Approach to the Clivus: A Comparative Anatomical Study.

Ten cadaveric heads fixed and injected were dissected in the operative position. An enlarged subfrontal approach was adopted. The clival bone was drilled as much as possible under direct microscopic vision.

Endoscope-assisted microsurgery for intracranial aneurysms.

Objective: We discuss the role of the endoscope in the microsurgical treatment of intracranial aneurysms, analyzing its benefits, risks, and disadvantages.

Methods: This was a prospective study of 55 patients with 79 aneurysms, treated between July 1998 and June 2001, for whom the endoscope was used as an adjunct in the microsurgical treatment of their lesions. Seventy-one aneurysms were located in the anterior circulation, and eight were located in the posterior circulation.

Endoscopic-assisted transcolumellar approach to the clivus: an anatomical study.

Objective: Surgical exposure of the clivus and retroclival region is a challenging problem. Several extracranial and intracranial approaches using microsurgical techniques have been proposed in the search to optimize the exposure of the clival region. The objective of the present study was to develop an endoseopic-assisted transcolumellar approach to the anterior clivus.

Cerebral revascularization for aneurysms and tumors.

Objective: To discuss the indications, techniques, pitfalls, complication avoidance, and management of cerebral revascularization techniques for the treatment of aneurysms and cranial base tumors.

Methods: The indications for cerebral revascularization procedures included microsurgical occlusion of a parent vessel during the treatment of aneurysms and occlusion of a major vessel during the treatment of basal tumors. The techniques discussed include arterial patch grafting, end-to-end anastomosis, side-to-side anastomosis, arterial interposition grafting, and extracranial-to-intracranial bypass grafting, using radial artery grafts or saphenous vein grafts.