Sma Syndrome Diagram. Superiormesenteric artery syndrome 777 aorta superiormesentericvein andartery a b figure 1 a diagram of the anatomy of the third part ofthe duodenum and b its relationship to the aorta vertebrae and superior mesenteric vessels from jones pa. Spinal muscular atrophy sma is a group of hereditary diseases that progressively destroys motor neuronsnerve cells in the brain stem and spinal cord that control essential skeletal muscle activity such as speaking walking breathing and swallowing leading to muscle weakness and atrophy.
Note the tapering of the artery beyond the origin of the middle colic artery. Sma syndrome also called superior mesenteric artery syndrome is a rare digestive condition that occurs when the third portion of the duodenum the first part of the small intestine is compressed between two arteries the abdominal aorta and the superior mesenteric artery 1. Its a serious condition that gets worse over time but there are treatments to help manage the symptoms.
The term mesentery refers to a double layered membrane called the peritonium which encases the small and large intestines.
A nice fairly extensive differential is generated this way. A diagram of the aorta including the superior mesenteric artery. By thinking systematically about the abdominal anatomy many things come to. Zolgensma was not evaluated in patients with advanced sma.