STEREOTAXIC RADIOSURGERY OF CAVERNOUS SINUS MENINGIOMAS AS AN ADDITION OR ALTERNATIVE TO MICROSURGERY

被引:232
作者
DUMA, CM
LUNSFORD, LD
KONDZIOLKA, D
HARSH, GR
FLICKINGER, JC
LARSON, DA
GUTIN, PH
FRIEDMAN, WA
机构
[1] UNIV PITTSBURGH,DEPT NEUROL SURG,PITTSBURGH,PA 15260
[2] UNIV PITTSBURGH,DEPT RADIAT ONCOL,PITTSBURGH,PA 15260
[3] UNIV PITTSBURGH,DEPT RADIOL,PITTSBURGH,PA 15260
[4] UNIV PITTSBURGH,CTR SPECIALIZED NEUROSURG,PITTSBURGH,PA 15260
关键词
CAVERNOUS SINUS; MENINGIOMA; STEREOTAXIC RADIOSURGERY;
D O I
10.1227/00006123-199305000-00001
中图分类号
R74 [神经病学与精神病学];
学科分类号
摘要
TO EVALUATE THE response of cavernous sinus meningiomas to stereotactic radiosurgery, we reviewed our 54-month experience with 34 patients. All patients underwent radiosurgery with a 201-source cobalt-60 gamma unit. Twenty-eight patients (82%) had previous histological confirmation of a meningioma (1 to 5 cranial base craniotomies per patient); 6 (18%) were treated on the basis of neuroimaging criteria alone. The single-fraction radiation tumor margin dose (10 to 20 Gy) was designed to conform to the irregular tumor volumes in all patients. The maximum radiation dose to the optic nerve or tract was reduced to 9 Gy in 31 patients. No patient had tumor growth (100% tumor control) during the follow-up interval (median, 26 mo). Tumor regression was observed in 56% of patients imaged at an average of 18 months. Eight patients (24%) improved clinically at follow-up examinations. Four patients developed new or worsened cranial nerve deficits during the follow-up interval; two had subsequent full improvement. No patient developed an endocrinopathy or new extraocular muscle paresis. Stereotactic radiosurgery, using multiple isocenter dosimetry facilitated by the gamma unit, is an accurate, safe, and effective technique to prevent the growth of tumors involving the cavernous sinus. Despite the proximity of such tumors to adjacent cranial nerves, complications were rare. The maximum length of hospital stay was 36 hours, and all patients returned to their preoperative employment status within 3 to 5 days. Although even longer follow-up is required, stereotactic radiosurgery using the gamma knife technique was found to be a low-morbidity alternative to aggressive microsurgical removal of small to moderate-sized tumors of the cavernous sinus.
引用
收藏
页码:699 / 705
页数:7
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