History of subcutaneous pericolitis like T-cell lymphoma, diplopia. There is diffuse thickening of subgaleal soft tissue which shows diffuse enhancement on frontal area which extends cross the forehead reaching to the level of bilateral upper eyelids. The left high parietal scalp show localized loss of subgaleal fat layer which shows diffuse enhancement. This lesion may also represent similar lesion but not presented with mass like swelling.Underlying skull shows normal fatty marrow signal intensity.These scalp lesions may represent known subcutaneous lymphoma involvement. However, differential diagnosis include associated infectious process or trauma related swelling.There is no evidence of acute ischemic or hemorrhagic lesion on the scan.There is no abnormal enhancement either.The ventricles, sulci and cisterns are symmetric and unremarkable. The gray-white matter differentiation is normal. 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 mastoid air cells are clear.Left maxillary sinus opacification.
1. Diffuse swelling and enhancement of the frontal subgaleal soft tissue which extends toward bilateral upper eyelids indicating possible known subcutaneous lymphoma involvement. Differential diagnosis include infectious or inflammatory process or trauma related swelling.2. Loss of fat signal intensity of the left high parietal scalp with enhancement, this could represent similar underlying lesion but not presented with mass like lesion.3. No acute ischemic or hemorrhagic lesion in brain parenchyme. No abnormal enhancement.