PMC5337473_01
Magnetic resonance imaging on the day of admission. Axial T2-weighted images (A, B) and an axial diffusion-weighted image (C) show an area of high signal intensity in the right anterior medial temporal lobe and insular cortex. Magnetic resonance angiography (D) shows an aneurysm at the bifurcation of the distal M1 segment of the right cerebral artery.
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The right anterior medial temporal lobe and insular cortex displayed high signal intensity on T2-weighted and diffusion-weighted brain magnetic resonance imaging (Fig. 1A-C), and the patient's aneurysm, which was already known to exist, was observed at the bifurcation of the distal M1 segment of the middle cerebral artery using magnetic resonance angiography (Fig. 1D).
Computed tomography and magnetic resonance imaging at the time of cerebral hemorrhage. Axial computed tomography shows acute cerebral hemorrhage in the right medial temporal lobe (A) and the right basal frontal area (B). A right lateral ventricular rupture is also observed (C). Magnetic resonance angiography (D) shows an increase in the size of the right cerebral arterial aneurysm at the bifurcation of the distal M1 segment of the right cerebral artery.
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Brain computed tomography imaging performed on day 14 revealed cerebral hemorrhage in the right medial temporal lobe and right basal frontal area, with a right lateral ventricular rupture (Fig. 2A-C). Although magnetic resonance angiography revealed an increase in the size of right cerebral arterial aneurysm (Fig. 2D), no evidence of subarachnoid hemorrhage was observed by computed tomography or magnetic resonance imaging.