304.A neurological case（part2）-Cerebral abscess

每天朗读一段医学影像学英语文章

Diagnosis：Cerebral abscess

Differential Diagnosis：

· Cerebral abscess: This is the organized, late phase of a brain infection. A bacterial etiology is the most common. The gray–white matter junction in the territory of the middle cerebral artery is the most frequent location because of hematogenous spread. A ring-enhancing lesion is described as having smooth inner and outer margins. There is surrounding edema. The lesion presents as high signal on Diffusion-WIs with a dark apparent diffusion coefficient (ADC) map.

· Metastasis: A hematogenous metastasis involves the cortical or subcortical white matter and occurs more frequently in the territory of the middle cerebral artery. The lesion demonstrates surrounding vasogenic edema, no restricted Diffusion, and nodular or ring enhancement. Hemorrhage may be present. A known primary tumor increases the likelihood of this diagnosis.

· Glioblastoma multiforme: This is the most common of the primary intracranial neoplasms. The usual presentation is thick, irregular ring enhancement with a serrated inner margin. There is a necrotic center with surrounding edema. The corpus callosum can be affected. Glioblastoma multiforme can have increased signal on Diffusion-WIs but usually has no restriction on the ADC map.

Notes:

1. bacterial /bæk'tɪrɪəl/ 细菌

2. etiology /ˌiti'ɑlədʒi/ n. 病因学；病原学；[医]致病源

3. hematogenous /ˌhiməˈtɑdʒənəs/ adj. 造血的,血性的

4. coefficient /ˌkoɪ'fɪʃnt/ n. 系数

5. metastasis /mə'tæstəsɪs/ n. 转移

6. hemorrhage /'hɛmərɪdʒ/ n. (尤指大量的)出血;失血 vi. 大出血

7. glioblastoma multiforme /ˌɡlioblæˈstomə/ 多形性胶质细胞瘤

8. serrated /sə'retɪd/ adj. 边缘呈锯齿状的;有锯齿形边缘的

9. necrotic /ne'krɔtik/ adj. 坏死的；骨疽的，坏疽的

10. corpus callosum /'kɔrpəs/ /ka:'ləusəm/ 胼胝体

来源：每天朗读一段医学影像学英语文章

圈主

深圳市人民医院放射科副主任医师杨敏洁

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