Case courtesy Eytan Raz, MD Ph.D.

Vein of Foramen Cecum — a rare variant of embryonic significance but i must say not too much functional significance usually.  Foramen cecum transiently contains a dural tail connecting anterior cranial fossa to nasal skin during development. The foramen usually fills with cartilage or bone, but when it is patent it can contain a vein. In this patient with hypoplasia of the superior sagittal sinus there is remarkable reorganization of venous drainage, favoring cavernous sinuses, the superior ophthalmic vein, and likely also responsible for relative prominence of foramen cecum vein

Anaglyphs

Left side