Friday, July 6, 2018
Malignant astroblastoma in a 23-year-old female
Headaches prompted imaging which showed a large right parieto-occipital tumor. Astroblastic pseudorossettes are prominent, with cells that are fairly monotonous. GFAP was only focally positive, not unusual for this diagnosis. Mitotic rate ranged up to 8 per 10 HPF, with a MIB1 cell cycling index reaching 40%.