Case report of the extramedullary hematopoiesis presented as a hypervascular intracranial mass
A 34-year-old man presented with progressive headache and epileptic condition for the last 10 months. He was known to have intermediate B-thalassemia. He experienced severe nausea, vomiting, and growing loss of vision. He was admitted in the neurosurgery ward of Alzahra Hospital, Isfahan, Iran.\nOn the day of admission, he was anemic and received transfusion therapy for the first time, after he became a candidate for surgery. On lateral skull X-ray showed thickening of diploic space []. Non-contrast and contrast-enhanced brain computed tomography scan (CT) in bony and soft tissue window revealed external and internal skull Tables and diploic space thickening and one hyperdense enhancible left paraventricular mass with peripheral edema [Figures -]. On axial T1-W and T2-W brain magnetic resonance imaging (MRI), a hyper- and hypointense paraventricular mass with peripheral edema was identified [Figures and ]. After injection of gadolinium, sagittal T1-W images showed intense and homogeneous enhancement [Figures -]. A surgical biopsy showed infi ltration by megakaryocytes, erythroblasts, and myeloid cells corresponding to EMH.