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Pineal Parenchymal Tumor

Stages of Pineal Parenchymal Tumor

Brain and spinal cord tumors are graded on a scale of one to four based on how quickly they are expected to grow, with grade I tumors signifying slow growth, normal-looking growth and a tumor that may be possible to entirely remove by surgery; grade II tumors indicating slow growth but the possibility that the tumor may spread into nearby tissue, come back after treatment or progress into a higher-grade tumor; grade III tumors, which grow quickly, are likely to spread, and have cells that look very abnormal; and grade IV or high-grade tumors, which spread very quickly and are harder to cure.

In the case of pineal parenchymal tumors, pineocytomas, the lower-grade tumors that primarily affect young adults, are considered to be grade II; whereas the pineoblastomas, which target children and are very malignant, are considered to be grade IV.
 

Locations for Pineal Parenchymal Tumor