Isolated superior mesenteric artery dissection

Isolated superior mesenteric artery dissection (ISMAD) is a rare but potentially life-threatening condition that causes acute abdominal pain. It refers to a dissection that occurs solely in the superior mesenteric artery (SMA), typically spontaneously, and does not involve the aorta.

Source: Wikipedia — Isolated superior mesenteric artery dissection (CC BY-SA 4.0)