Other hallucinations [R44.2], Reason for Study: ^Reason: phantosmia, history of brain issue in 1980s, eval for smell pathway lesions History: phantosmia There is ovoid shape well circumscribed intra axial lesion on the left pre central gyrus. The lesion has thin low signal intensity rim on T2 with internal multiple compartmentalized high signal intensity. The size of the lesion is about 5mm x 6mm x 4mm on T2 images and it shows significant susceptibility artifacts on Gradient echo image indicating the diagnosis of cavernous malformation. There is no evidence of surrounding edema.There is no other susceptibility lesion seen on this scan.There is no evidence of acute ischemic lesion.Underlying brain shows multiple scattered bihemispheric high signal intensity lesions on T2/FLAIR indicating non specific small vessel ischemic lesions.The ventricles, sulci and cisterns are symmetric and unremarkable. 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.Mucosal thickenings on bilateral ethmoid sinuses and retention cysts on the right frontal sinus and bilateral maxillary sinuses.
1. Left pre central gyrus cavernous malformation as described above.2. No acute ischemic lesion on this scan.3. Non specific small vessel ischemic disease.