Headache [R51], Reason for Study: ^Reason: meningitis History: meningismus There is no evidence of acute ischemic or hemorrhagic lesion on this scan.There is no abnormal enhancement intracranially.There is, however, well circumscribed ovoid lesion on the right frontal bone. The lesion shows high signal intensity on T2, low signal intensity on T1 and shows homogenous enhancement. There is no associated soft tissue mass, nor periosteal reaction, both inner and outer table appear to be intact. Constellation of these findings suggest possible intra-osseous hemangioma. Differential diagnosis include dermoid, fibrous dysplasia, eosinophilic granuloma, metastasis, and multiple myeloma.The ventricles, sulci and cisterns are symmetric and unremarkable. There is no mass, mass effect, edema, midline shift, intra or extra-axial fluid collection/hemorrhage, restricted diffusion/acute ischemia, or abnormal contrast enhancement. The midline structures and cranial-cervical junction are normal. Normal flow voids are identified in the major intracranial vessels. The paranasal sinuses and mastoid air cells are clear.
No evidence of acute ischemic or hemorrhagic lesion.No intracranial abnormal enhancement.Right frontal skull lesion most likely represent hemangioma with multiple differential diagnosis as described above.