From the case:
Liver duck (Rorschach radiology)
{"current_user":null,"step_through_annotations":true,"access":{"can_edit":false,"can_download":true,"can_toggle_annotations":true,"can_feature":false,"can_pin":false},"extraPropsURL":"/studies/83233/annotated_viewer_json?iframe=true\u0026lang=us"}
IVC and hepatic veins creating the appearance of a duck in the liver.