Bauer et al graded portal vein thrombosis (PVT) based on the venous distribution and extent of occlusion. The application over time can document the therapeutic efficacy of an intervention. The authors are from the University of Colorado.
Venous distributions - each graded separately:
(1) main portal vein
(2) superior mesenteric vein
(3) splenic vein
Percent Luminal Occlusion
Grade
0% (Patent)
0
1 to 25%
1
26 to 50%
2
51 to 75%
3
76 to 100%
4
The presence or absence of cavernous transformation was also recorded.
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