Duodenal compression defect and the "superior mesenteric artery syndrome" 1. 1977

B Gondos

Forty-two cases of progressive systemic sclerosis were reviewed. A compression defect of the duodenum was found at the site where the superior mesenteric artery crossed the duodenum in all patients with duodenal dilatation. A similar observation was made in patients with small-intestinal obstruction and pancreatitis. Both the defect and dilatation may spontaneously disappear and return. The author concludes that in the cases studied, the compression produced by the superior mesenteric artery is secondary to dilatation and loss of muscle tone of the duodenum. It does not cause obstruction, and its presence per se does not warrant a diagnosis of "superior mesenteric artery syndrome."

UI MeSH Term Description Entries
D008638 Mesenteric Arteries Arteries which arise from the abdominal aorta and distribute to most of the intestines. Arteries, Mesenteric,Artery, Mesenteric,Mesenteric Artery
D009103 Multiple Sclerosis An autoimmune disorder mainly affecting young adults and characterized by destruction of myelin in the central nervous system. Pathologic findings include multiple sharply demarcated areas of demyelination throughout the white matter of the central nervous system. Clinical manifestations include visual loss, extra-ocular movement disorders, paresthesias, loss of sensation, weakness, dysarthria, spasticity, ataxia, and bladder dysfunction. The usual pattern is one of recurrent attacks followed by partial recovery (see MULTIPLE SCLEROSIS, RELAPSING-REMITTING), but acute fulminating and chronic progressive forms (see MULTIPLE SCLEROSIS, CHRONIC PROGRESSIVE) also occur. (Adams et al., Principles of Neurology, 6th ed, p903) MS (Multiple Sclerosis),Multiple Sclerosis, Acute Fulminating,Sclerosis, Disseminated,Disseminated Sclerosis,Sclerosis, Multiple
D009129 Muscle Tonus The state of activity or tension of a muscle beyond that related to its physical properties, that is, its active resistance to stretch. In skeletal muscle, tonus is dependent upon efferent innervation. (Stedman, 25th ed) Muscle Tension,Muscle Tightness,Muscular Tension,Tension, Muscle,Tension, Muscular,Tightness, Muscle,Tonus, Muscle
D011312 Pressure A type of stress exerted uniformly in all directions. Its measure is the force exerted per unit area. (McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed) Pressures
D011859 Radiography Examination of any part of the body for diagnostic purposes by means of X-RAYS or GAMMA RAYS, recording the image on a sensitized surface (such as photographic film). Radiology, Diagnostic X-Ray,Roentgenography,X-Ray, Diagnostic,Diagnostic X-Ray,Diagnostic X-Ray Radiology,X-Ray Radiology, Diagnostic,Diagnostic X Ray,Diagnostic X Ray Radiology,Diagnostic X-Rays,Radiology, Diagnostic X Ray,X Ray Radiology, Diagnostic,X Ray, Diagnostic,X-Rays, Diagnostic
D004108 Dilatation, Pathologic The condition of an anatomical structure's being dilated beyond normal dimensions. Ectasia,Dilatation, Pathological,Dilatations, Pathologic,Dilatations, Pathological,Pathologic Dilatation,Pathologic Dilatations,Pathological Dilatation,Pathological Dilatations
D004380 Duodenal Obstruction Hindrance of the passage of luminal contents in the DUODENUM. Duodenal obstruction can be partial or complete, and caused by intrinsic or extrinsic factors. Simple obstruction is associated with diminished or stopped flow of luminal contents. Strangulating obstruction is associated with impaired blood flow to the duodenum in addition to obstructed flow of luminal contents. Duodenal Obstructions,Obstruction, Duodenal,Obstructions, Duodenal
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D013577 Syndrome A characteristic symptom complex. Symptom Cluster,Cluster, Symptom,Clusters, Symptom,Symptom Clusters,Syndromes
D014652 Vascular Diseases Pathological processes involving any of the BLOOD VESSELS in the cardiac or peripheral circulation. They include diseases of ARTERIES; VEINS; and rest of the vasculature system in the body. Disease, Vascular,Diseases, Vascular,Vascular Disease

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