Name : Hamid Reza
Family : Haghighatkhah
Resident : Masoome Raoufi
Gender : Male
Age : 52
Head & Neck Imaging
52 Y/O man.
Imaging Procedures and Findings
MR: ON axial T2 and T1 images there is a mass lesion in right frontal lobe with extention in to the convexity cortex.
Oligodendroglioma accounts for 5% to 18% of all gliomas (about 4% of all intracranial neoplasms). It is more common in adults, with a peak age of 30 to 50 years old. Children are affected in about 6% of cases. The tumor is supratentorial in 85% of cases and most commonly (50% to 65% of the time) located in the frontal lobe. The tumor usually grows slowly and, on microscopy, shows calcification in 100% of cases, with hemorrhage and cysts occurring in about 20% of cases.On MRI ,tumors appear heterogenouse on both T1WI and T2WI because of intratumoral cycts and calcifications.Anaplastic olygodendrogliomas on histology demonstrate greater cellular atypia ,more extensive tumor vascularity and necrosis.The prognose is less favorable.
anaplastic olygodendroglioma with cortical extention
Brant WE, Helms CA. Fundamentals of Diagnostic Radiology, 3rd edition. P132.