Abstract:
:A strategy for surgical management, including the approach and preoperative evaluation, of pituitary adenoma invading the skull base is described. Preoperative evaluation requires a balloon occlusion test of the internal carotid artery (ICA) to determine tolerance to occlusion. Failure to tolerate occlusion indicates administration of brain protective agents and/or a bypass procedure before tumor removal. The transsphenoidal, pterional, orbitofrontomalar, and infratemporal fossa approaches are all suitable for various tumor locations. A combined orbitofrontomalar and extended frontal approach allows removal of tumor with extensive invasion and is suitable for bypass procedures. Preoperative evaluation of ICA occlusion can prevent development of hemodynamic stroke. We treated five patients with pituitary adenoma invading the skull base, including two primary and three recurrent cases. All symptoms improved, but temporary oculomotor nerve disturbance occurred in three patients and anosmia in one. Reoperations for recurrent pituitary adenomas were effective in reversing the symptoms. No hemodynamic stroke was seen postoperatively. These tumors, except for drug-responsive cases, are indicated for skull base surgery.
journal_name
Neurol Med Chir (Tokyo)journal_title
Neurologia medico-chirurgicaauthors
Nakase H,Ohnishi H,Touho H,Takaoka M,Karasawa J,Kawaguchi M,Sakamoto Tdoi
10.2176/nmc.34.686subject
Has Abstractpub_date
1994-10-01 00:00:00pages
686-91issue
10eissn
0470-8105issn
1349-8029pii
JST.Journalarchive/nmc1959/34.686journal_volume
34pub_type
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