Woman fell, brought to ER.
Findings: CT demonstrates a soft-tissue mass near the tectal plate causing obstructive hydrocephalus.
MRI demonstrates an intra-axial mass arising from the tectal plate and compressing the 4th ventricle causing obstructive hydrocephalus. The mass is T2 hyper intense, T1 isointense and no significant contrast enhancement is seen. No surrounding edema.
- Tectal plate glioma (particularly low grade astrocytoma)
- Pineal region masses (pineocytoma, germinoma, etc.)
- Metastatic disease
Diagnosis: Tectal plate glioma