TITLE: Transient Hepatic Attenuation Difference (THAD) due to Right Portal Vein Thrombosis
There is relatively increased enhancement of the right hepatic lobe and decreased attenuation to the left hepatic lobe. This finding is associated with normal enhancement of the left portal vein and right portal vein thrombosis. Transiently increased attenuation to the right lobe on this early phase is due to a relative increase in hepatic arterial flow to compensate for the decreased portal flow. There is extensive splenic traumatic injury with multiple areas of decreased splenic attenuation involving more than 50% of the spleen, representing laceration of the spleen with hematoma and/or infarction. Splenic vein is identified.