382.Colloid cyst

每天朗读一段医学影像学英语文章

Figure 4A. Axial T2W image. A small homogeneous T2-hypointense mass is seen in the region of the foramen of Monro (arrow).

Figure 4B. Sagittal T2W image. The T2-hypointense mass is redemonstrated in the region of the foramen of Monro (arrow).

Figure 4C. Axial T1W image. The mass exhibits T1 hyperintensity.

Diagnosis:  Colloid cyst.

Discussion:  There are many different appearances of cysts on MRI. Colloid cysts are typically T2 hyperintense. However, in this case the concentration of internal protein and paramagnetic material is high, which results in T2 hypointensity and

T1 hyperintensity. Colloid cysts have a very characteristic location at the foramen of Monro, which greatly aids in their diagnosis. As with other cysts, colloid cysts should be homogeneous and should not exhibit central enhancement.

Notes：

1. foramen of Monro /fə'reimen//fəˈremən/ 室间孔

2. colloid cyst /'kɒlɒɪd/ /'kɑlɔɪd/ 胶样囊肿

3. paramagnetic /pærəmæg'netɪk/ /ˌpærəmæg'nɛtɪk/ adj. 顺磁性的

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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