title: Non-visualization of renal calices during excretory urography as an indicator or renal transplant rejection.
mesh_terms: D006084:Graft Rejection; D006801:Humans; D007668:Kidney / Q000000981:diagnostic imaging / Q000473:pathology; D016030:Kidney Transplantation; D014184:Transplantation, Homologous; D014567:Urography