影像所见
CT
- Pineal region mass with peripheral calcification
- Associated obstructive hydrocephalus
MRI
- Pineal region mass measuring 3.3 x 2.5 x 2.5 cm
- Diffuse intermediate T2 signal, restricted diffusion, and avid enhancement
- Peripheral foci of susceptibility artifact corresponding to calcification on the CT
- Downward mass effect on the tectum with obstructive hydrocephalus at the level of the cerebral aqueduct and subependymal edema
诊断
Pineal parenchymal tumor of intermediate differentiation (PPTID)
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