Table 2:

Histologic findings in arteries embolized with PIB

Follow-UpIntraluminal InflammationPerivascular InflammationVascular InjuryMural HemorrhageExtravasationNeovascularization
1 weekMildMildNoneAbsentAbsentAbsent
1 monthNone or mildMildNoneAbsentAbsentAbsent
2 monthsNone or mildNone or mildNoneAbsentAbsentAbsent
3 monthsNoneNoneNoneAbsentAbsentAbsent