Transient hepatic attenuation difference or fat sparing? Aberrant right gastric vein determining a pseudolesion at the border of the IInd/IIIrd liver segments. Review of developmental concepts.

The aberrant right gastric vein (ARGV) is a rare anatomical variation. It can be responsible for unexplained hyperdensities in the hepatic parenchyma on CT scans, also known as third inflow effects. We present two cases sharing similar vascular pattern and slightly different imagistic findings on ultrasound and computer-tomography performed studies.