“…When the mass gradually invades the cranial skull, dura mater, or infiltrates the cortex, corresponding focal neurologic signs appear such as headache, limb numbness, hemiplegia, and convulsions. [3,6,16,17] In our case, the patient had a history of head trauma and his scalp mass gradually increased to a large size. According to the literature, the differential diagnoses of PCVL include meningioma, metastatic infiltration, histiocytosis, subdural hematoma, plasma cell tumors, and osteomyelitis.…”