has part has part has_part characteristic of part of has modifier abnormal kidney venous blood vessel morphology abnormal renal vein morphology MPheno.ontology MP:0011323 any structural anomaly of the pair of major vessels which arise from the renal hilus and return blood from the kidneys, suprarenal gland and the ureter to the inferior vena cava csmith 2011-10-12T02:21:27Z morphology abnormal renal vein