The iliac vein is an extremely rare site of metastasis for extraskeletal mesenchymal chondrosarcoma (ESMC). Involvement of the veins usually leads to an extremely dismal prognosis.

Schizencephaly is a rare developmental disorder of the central nervous system (CNS) marked by abnormal clefts or slits spreading from the lateral ventricle to the cerebral hemispheres.Developmental venous anomaly (DVA) is a benign venous anomaly draining cerebral parenchyma. DVAs are usually asymptomatic and do not cause any complications.