Diploic Space

Herein the anatomy and physiology of the diploic veins are reviewed.

Diploic space. In adults in whom yellow marrow has supplanted the red marrow of childhood or in whom there is simply a greater proportion of yellow marrow this space is visualized as increased si on t1wi. Diploic veins are veins in the diploic space of the skull the space between inner and outer tables. The diploic space is the marrow containing area in the skull vault between the inner and outer layers of compact dense bone.

They develop fully by the age of two years. The diploic veins drain this area into the dural venous sinuses. In adults in whom yellow marrow has supplanted the red marrow of childhood or in whom there is simply a greater proportion of yellow marrow this space is visualized as increased si on t1wi.

Diffuse osteopenia prominent vascular markings in skull thin and large calvarium with shallow diploic space multiple wormian bones small mandible with infantile obtuse angle and short ascending rami hypoplastic facial bones open cranial fontanelles thin short clavicles dwarfism abnormally gracile ribs involving the posterior segments of the upper ribs slender long bones kyphosis. However their importance in draining the brain is generally under appreciated. The diploic space is the medullary cavity of the skull and a location of normal physiologic hematopoiesis in adults.

They are lined by a single layer of endothelium supported by elastic tissue. The diploic space is the marrow containing area in the skull vault between the inner and outer layers of compact dense bone. They are depicted in all kinds of atlases.

The diploic space has been identified as an additional site of reabsorption of cerebrospinal fluid csf. Diploic veins diploic space arteriovenous fistula cerebrospinal fluid diploic venous system. Thus expansion of this structure most commonly occurs in the setting of chronically increased intramedullary hematopoiesis.