The focal hepatic hot spot sign appears as an area of increased radiopharmaceutical uptake of the quadrate lobe of the liver in the arteial an veinous phase. This sign seen on CT is due to obstruction of the superior vena cava and portosystemic venous shunt between the superior vena cava and the left portal vein via the thoracic and internal para-umbilical veins.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.