syncope and subacute right retro-orbital pain There is about 4.5mm x 6.4mm x 7.6mm sized well circumscribed, non enhancing fluid (likely CSF) containing lesion on the posterior aspect of the right choroidal fissure without showing evidence of mass effect or CSF flow disruption indicating benign choroidal fissure cyst. Differential diagnosis include arachnoid cyst, neuroglial cyst or enlarged perivascular space.Otherwise there is no evidence of acute ischemic or hemorrhagic lesion.There is no evidence of abnormal enhancement.The ventricles, sulci and cisterns are symmetric and unremarkable. There is no 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.
About 4.5mm x 6.4mm x 7.6mm sized well circumscribed fluid containing lesion on the right choroidal fissure, differential diagnosis include benign choroidal fissure cyst such as arachnoid cyst or neuroglial cyst.Otherwise unremarkable. 