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Surg Neurol Int ; 10: 17, 2019.
Article in English | MEDLINE | ID: mdl-31123624

ABSTRACT

BACKGROUND: In surgery involving brain tumors, the use of new tools or equipment that allows for better results and improvement in the quality of life of the patients is mandatory. Microwave ablation (MWA) is a technique that has been used effectively since 1994 in the management of different kinds of tumors. The authors present their surgical experience with 23 cases of brain and skull-base tumors using MWA technique. METHODS: In all, 23 cases diagnosed with brain and skull-base tumors are described; all of these were treated with MWA as unique technique as a complement to conventional microsurgical tumor resection. In all cases, ultrasound imaging guidance was used. A thin antenna (caliber 14.5; MedWaves) was positioned through ultrasound images to a central intratumoral area, and then energy was applied for 1-3 min until the temperature sensor in the proximal position of the antenna reached 80-100°C. Through transoperative Doppler ultrasound images and surgical microscopy, changes in the generated ablation were observed. The said ablation led to a decrease in intratumoral blood flow, and the adjacent vascular and cerebral structures were preserved. RESULTS: The application of MWA during brain surgery was regarded as safe in all cases, as no permanent additional neurological deficit was detected. Intratumoral vascular flow was also reduced and tumor resection was facilitated. Likewise, a reduction in tumor volume was noted, and in others in whom the ablation was applied as a single therapy, a progressive destruction of the tumor was observed. CONCLUSION: MWA can be a useful tool as a single therapy or as a complement to conventional techniques for the surgical resection of brain and skull-base tumors. It was a safe method in all cases, producing a decrease in intratumoral blood flow, and this procedure facilitates the microsurgical resection of the lesion.

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