Additional information Box for retroperitoneal structures: Remember Mnemonic SAD PUCKER S: suprarenal glands A: aorta and IVC D: duodenum second and third part P: pancreas (except tail) U: ureters C: colon ascending and descending K: kidneys E: esophagus R: rectum Key pointsRetroperitoneal structures (Mnemonic: SAD PUCKER) Suprarenal glands, aorta & IVC, duodenum (2nd & 3rd parts) Pancreas (except tail), ureters, colon (ascending & descending) Kidneys, esophagus, rectum