Magnetic resonance imaging findings. These MRI scans show a single 8.99 cm × 2.26 cm abnormal signal intensity involving the scalp in the left frontoparietal region appearing isointense to hyperintense on T1-weighted images (thin white arrow) with few calcified subependymal nodules within the body of the lateral ventricles on the right side (black arrow), a few small tubers with cortical dysplasia (thick white arrow) in the left frontoparietal region, and left maxillary sinusitis.