Absence of which amongst the following is the most common variation
Right colic aery
Middle colic aery
Left colic aery
Superior rectal aery
The right colic aery arises from about the middle of the concavity of the superior mesenteric aery, or from a stem common to it and the ileocolic. It passes to the right behind the peritoneum , and in front of the right internal spermatic or ovarian vessels, the right ureter and the psoas major, toward the middle of the ascending colon; sometimes the vessel lies at a higher level, and crosses the descending pa of the duodenum and the lower end of the right kidney. image ref - britannica.com
Abdomen and pelvis