Grades of periventricular leukomalacia

Last revised by Mohammad Salem Amer on 31 Mar 2024

One of the methods used for grading periventricular leukomalacia on sonographic appearance is as follows 1:

  • grade 1: areas of increased periventricular echogenicity without any cyst formation persisting for more than 7 days

  • grade 2: the echogenicity has developed into small periventricular cysts

  • grade 3: areas of increased periventricular echogenicity, that develop into extensive periventricular cysts in the occipital and frontoparietal region

  • grade 4: areas of increased periventricular echogenicity in the deep white matter developing into extensive subcortical cysts

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