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患者女,61岁。10余天前无明显诱因出现右侧肢体乏力、构音不清,间有头晕、头痛,无畏寒发热。体检:神志清楚,构音不清,双侧浅感觉对称;右上肢近端肌力Ⅲ级、远端0级,右下肢肌力Ⅲ级,左侧肢体肌力Ⅴ级。相关实验室检查未见明显异常。影像学表现:CT平扫示左侧额叶皮层区一环状肿物,周边呈稍高密度、中央呈低密度,周围见“指压状”水肿(图1)。MR平扫示左侧额叶皮层区病灶周边呈等T1、等T2信号,中
Female patient, 61 years old. Ten days ago no obvious incentive to appear on the right limb fatigue, unclear articulation, dizziness, headache, no chills fever. Physical examination: Consciousness, unclear articulation, bilateral superficial sense of symmetry; right upper extremity proximal muscle strength III, distal 0, right lower extremity muscle strength III, left limb muscle strength V grade. Related laboratory tests showed no obvious abnormalities. Imaging findings: The CT scan showed a ring-shaped mass in the frontal cortex of the left side with a slightly higher density at the periphery and a low density at the center. See the “acupressure” edema around the CT scan (Figure 1). MR plain scan showed the left side of the frontal cortex lesions were T1, and other T2 signals, in