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Low-Grade Diffuse Astrocytoma

Last Updated: October 1, 2018

Figure 1: T1WI post contrast (left) and axial FLAIR (right) images demonstrate a fairly circumscribed infiltrative lesion involving the cortex and white matter. This low-grade tumor is associated with no appreciable enhancement.


Figure 2: Axial FLAIR (top row left) and coronal STIR (top row right) images demonstrate a poorly-defined infiltrative, hyperintense lesion involving the left temporal lobe, left insula and inferior left frontal lobe. T1WI after contrast administration (bottom) shows no contrast enhancement of this low-grade astrocytoma.

Basic Description

  • Primary tumor arising from well-differentiated astrocytes


  • World Health Organization (WHO) grade II
  • Well-differentiated, infiltrating, slow-growing
  • Malignant degeneration into anaplastic astrocytoma com...