Pineal parenchymal tumors

Last revised by Frank Gaillard on 02 Dec 2021

Pineal parenchymal tumors comprise a group of related tumors ranging from relatively benign to highly malignant. There are 5 diagnoses currently recognized in the 5th edition (2021) WHO classification of CNS tumors 4:

As you can tell from the proportions given above, there is wide variation in the reported figures from series to series, which probably reflects the overall rarity of these tumors (and thus small series) and variability in the grading and terminology used.

Terminology

The term pinealoma was historically used to refer to both pineal parenchymal tumors and germinomas 3. This term has since fallen in popularity in the last several decades.

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