Most common site of sub ependymal astrocytoma (Giant cell):

SubEpendymal Giant cell Astrocytoma Most common site of subependymal giant cell astrocytoma is the ependymal wall of lateral ventricle near the foramen of Monro Causes obstruction at the foramen of Monro leading to ventricular enlargement and raised ICT Presence of multiple periventricular calcific foci (calcified subependymal nodules) suggest the diagnosis of Tuberous sclerosis with subependymal giant cell astrocytoma Ref: Neurology in Clinical practice 4th edition Pgno: 428