The majority of incidental meningiomas show minimal growth; thus, they may be observed without surgical intervention unless specific symptoms appear. Tumor growth is associated with patient age. The initial tumor size is not considered a predictive factor for tumor growth. Radiological features, such as calcification or T2 signal intensity, may provide useful information to predict the growth potential of meningiomas.
We analyzed the progeny of individual neural stem cells (NSCs) of the mouse adult subependymal zone (SEZ) in vivo and found a markedly fast lineage amplification, as well as limited NSC self-renewal and exhaustion in a few weeks. We further unraveled the mechanisms of neuronal subtype generation, finding that a higher proportion of NSCs were dedicated to generate deep granule cells in the olfactory bulb and that larger clones were produced by these NSCs.
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