脑室内黑色素瘤的影像学特征。
Imaging features of intraventricular melanoma.
作者信息
Arbelaez A, Castillo M, Armao D M
机构信息
Department of Radiology, University of North Carolina School of Medicine, Chapel Hill 27599, USA.
出版信息
AJNR Am J Neuroradiol. 1999 Apr;20(4):691-3.
Abstract
We present the MR imaging findings in a patient with symptoms of increased intracranial pressure and a mass in the left lateral ventricle. The mass showed increased signal intensity on T1-weighted images and low signal intensity on T2-weighted images. The histologic diagnosis was that of melanoma, and detailed physical and funduscopic examinations disclosed no evidence of a primary lesion. We believe that the mass was a primary intraventricular melanoma, possibly arising from the choroid plexus, and we discuss the mechanisms that may be responsible for its occurrence in this location.
摘要
我们展示了一名有颅内压升高症状且左侧侧脑室内有肿块的患者的磁共振成像（MR）检查结果。该肿块在T1加权图像上显示信号强度增加，在T2加权图像上显示低信号强度。组织学诊断为黑色素瘤，详细的体格检查和眼底检查未发现原发性病变的证据。我们认为该肿块是原发性脑室内黑色素瘤，可能起源于脉络丛，并讨论了其在此部位发生的可能机制。
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