The anatomic sites and extent of involvement should be specified in a patient with deep vein thrombosis (DVT) of the lower extremity. The International Consensus Committee has given direction for the clinical reporting of the imaging study findings.
Imaging technique: phlebography, duplex scanning or other applicable method
Deep venous segments:
(1) tibial-soleal veins
(2) popliteal vein
(3) common femoral vein
(4) superficial femoral vein
(5) iliac vein
(6) inferior vena cava
Superficial venous sites:
(1) greater saphenous vein and its branches
(2) lesser saphenous vein and its branches
(3) unnamed cutaneous veins (specify location)
Extent of Site Involvement
Grade
patent
0
subsegmental, nonocclusive thrombus
1
subsegmental, occlusive thrombus
2
occlusive thrombus throughout length of the segment
3
thrombotic score =
= SUM(grades for all venous segments)
Interpretation:
• minimum thrombotic score: 0
• maximum thrombotic score: 24 (may be 27+ if several unnamed veins involved)
• The higher the score, the more extensive the involvement.
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