Pineal region mass

Masses in the pineal region have a relatively broad differential because of the variety of cell types found in the region. 

If large enough, the mass may compress the tectal plate and may cause a defect in up-gaze (Parinaud syndrome) or obstructive hydrocephalus, if the cerebral aqueduct is compressed.

Intrinsic pineal tissue masses also tend to cause upward displacement of the internal cerebral veins. This is in distinction to tentorial meningiomas which depress the cerebral veins.

Differential diagnosis

If invasive, a tectal plate mass may be difficult to distinguish from a pineal mass.


Related articles

Pineal region masses

The pineal region is anatomically complex and plays host to a number of unique masses and tumours as well as potentially affected by many entities seen more frequently elsewhere in the brain. 

General reading

Pathology 

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