This axial (cross sectional) T2 weighted MRI of the brain demonstrates a heterogenous tumor in the right (your left) parietal lobe which destroys the overlying calvarium (skull bone) and extends into the overlying scalp. This tumor represents a malignant form of an astrocytoma. It is a WHO grade IV tumor called a Glioblasstoma Multiforme (GBM). These are most commonly seen in the elderly and unfortunately are one of the most common astrocytomas. They carry a poor, short term survival.