Abstract
Brain capillary telangiectasia is usually a small collection of dilated capillary-like vessels. In most cases it is aharmless incidental finding with no clinical significance. They are most commonly located in the pons. In terms of image morphology, they show brush-like signal extinction in T2*/SWI (susceptibility-weighted imaging) sequences and contrast enhancement in T1-weighted images. Other sequences are usually unremarkable unless they involve unusually large capillary telangiectasias. Angiographically they usually remain silent. Sometimes they are associated with venous abnormalities and/or cavernomas. Their distinctive radiographic features usually allow for areliable diagnosis. Differential diagnostic considerations, such as differentiation from atumorous or inflammatory process, are sometimes necessary.
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