Vein Glossary

Below is a glossary of terms related to all aspects of venous disease

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Gastrocneimus Vein
Veins in the posterior calf associated with the gastrocnemius muscle. Clots can occur in these veins but, are not as dangerous as clots in the popliteal vein.
  -- Short-term natural history of isolated gastrocnemius and soleal vein thrombosis

Greater Saphenous Vein (GSV)
The GSV courses from the groin to the ankle on the inner aspect of the leg. The GSV is responsible for most visible bulging veins in the thigh and inner aspect of the calf. All veins have valves, and if the valve does not work right, then bulging varicosities occur through the branches of the GSV.