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Table 2: 

Schöbinger's classification of superficial AVMs14
GradeDescription
IQuiescent lesion, pink or blue cutaneous stain, warm lesion, AV shunt on Doppler sonography
IIExpansive lesion, pulsatile lesion, thrill; dilated draining veins
IIIGrade II + necrosis, infection, hemorrhage or pain
IVGrade III + cardiac failure