Chronic cerebrospinal venous insufficiency controversy

Chronic cerebrospinal venous insufficiency (CCSVI or CCVI) is a term invented by Italian researcher Paolo Zamboni in 2008 to describe compromised flow of blood in the veins draining the central nervous system. Zamboni hypothesized that it might play a role in the cause or development of multiple sclerosis (MS).

Source: Wikipedia — Chronic cerebrospinal venous insufficiency controversy (CC BY-SA 4.0)