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Fig. 2 | BMC Neurology

Fig. 2

From: Preoperative obliteration of choroidal arteries in the treatment of large hypervascular tumors in the lateral ventricle

Fig. 2

In Patient 3, a left lateral ventricular tumor was incidentally detected eight years prior. Since the patient was experiencing visual field impairment due to tumor growth, surgical intervention was planned. a Preoperative magnetic resonance imaging (MRI) scan with gadolinium contrast showing a tumor in the left lateral ventricle (maximum diameter: 5.1 cm, tumor volume: 27.8 cm3). b Preoperative digital subtraction angiography (antero-posterior projection) reveals feeders originating solely from the anterior choroidal artery. The diameter of the AChA was 0.9 mm, which was considered too small to cannulate. c After temporal craniotomy, the occipitotemporal sulcus (black arrows) has been identified. The temporal horn is accessed by a subtemporal approach. d In the temporal horn, the anterior choroidal artery has been identified (black arrowheads), and cut. e After microsurgical occlusion of the anterior choroidal artery, MRI shows a 98.6% decrease of gadolinium-enhanced lesions. f After tumor removal via a parietal (intraparietal sulcus) approach, MRI shows no residual tumor

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