Clinical question: rule out. Signs and symptoms: Astrocytoma with increased weakness. Unenhanced CT of brain:Examination demonstrates no evidence of hemorrhage.Lesion isointense with cortex involving the left basal ganglia and periventricular white matter of left hemisphere measures approximately 33 x 22.5-mm in transaxial dimensions. There is no evidence of surrounding edema or any associated mass effect with this finding. Considering provided clinical date out of astrocytoma this finding could represent tumor. There are no old studies and follow-up with an MRI is recommended. There is no evidence of hemorrhage, edema, significant mass effect or midline shift or hydrocephalus. Calvarium, paranasal sinuses and mastoid air cells are unremarkable.
1.No evidence of acute intracranial findings.2.Isodense mass in the left hemispheric white matter which may represent patient's known astrocytoma. Follow-up with an MRI is recommended.