Case: A female in her 70s, previously treated for breast and thyroid cancer, presented to care for an abnormal, rushing sound in her left ear. She denied any other symptoms. Her neurological examination was unremarkable. Although her breast cancer was appropriately treated, further workup of her complaint was warranted to rule out any metastatic process. A brain CT showed a 23 mm left lytic destructive lesion that was PET avid. A brain MRI revealed an enhancing left parietal calvarial lesion. Given the cancer history and unusual imaging findings, she underwent a left parietal craniectomy with cranioplasty. Pathology revealed an intradiploic encephalocele without evidence of metastasis.