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Superior Mesenteric Artery Syndrome: a Prospective Study in a Single Institution

  • Angelica Ganss
  • Sabrina Rampado
  • Edoardo Savarino
  • Romeo Bardini
Original Article
  • 122 Downloads

Abstract

Background

Superior mesenteric artery syndrome (SMAS) is a rare cause of duodenal obstruction, resulting from the compression of the duodenum between superior mesenteric artery and aorta. This prospective registry aims to describe demographic, clinical, and outcome features of patients suffering from SMAS and to point out the indications for surgery.

Methods

Between 2008 and 2016, patients with chronic gastrointestinal symptoms and diagnosis of SMAS were included. Demographics, clinical presentation, diagnosis, and surgical outcome were recorded. Symptoms were investigated with a standardized questionnaire. The diagnosis was achieved through barium swallow, CT/MR angiography (aortomesenteric angle ≤ 22°, distance ≤ 8 mm), endoscopy. All patients underwent duodenojejunostomy ± distal duodenum resection. At follow-up, symptom score and barium swallow were re-evaluated.

Results

Thirty-nine patients (11 M/28 F, median age 38 years, median BMI 17.8 kg/m2) were included. Barium swallow showed a gastroduodenal dilation in 57% of patients, and a delayed gastroduodenal emptying in 38%. Median aortomesenteric angle was 11° and distance was 5 mm. All patients underwent duodenojejunostomy, and in 32 patients, a distal duodenum resection was also performed. At a median follow-up of 47 months, the overall symptom score significantly dropped (10 vs. 32, p < 0.0001) and BMI increased (19.5 vs. 17.8, p < 0.0001). Barium swallow at 2 months postoperatively showed an improvement in terms of gastroduodenal dilation and emptying in 38% of patients with preoperative pathological findings.

Conclusions

SMAS is a rare condition that should be suspected in cases of chronic, refractory upper digestive symptoms, particularly in females with low BMIs. Surgical treatment may improve symptoms and quality of life, although it is not curative in all cases.

ClinicalTrials.gov Identifier: NCT03416647

Keywords

Superior mesenteric artery syndrome Chronic duodenal obstruction Duodenojejunostomy Bile reflux 

Notes

Acknowledgments

We thank Dominique Denver for reviewing the manuscript and providing language support.

Authors’ Contributions

Angelica Ganss: study conception and design, acquisition of data, analysis and interpretation of data, drafting of the manuscript, critical revision of the manuscript

Sabrina Rampado: drafting of the manuscript, critical revision of the manuscript

Edoardo Savarino: critical revision of the manuscript

Romeo Bardini: study conception and design, critical revision of the manuscript

Compliance with Ethical Standards

This study was performed according to the Declaration of Helsinki Principles. It was reviewed and approved by the Internal Review Board in Padua, Italy. Written consent was obtained from all patients prior to study enrolment.

Conflict of Interest

The authors declare that they have no conflict of interest.

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Copyright information

© The Society for Surgery of the Alimentary Tract 2018

Authors and Affiliations

  1. 1.Department of Surgery, Oncology and Gastroenterology, General Surgery Unit, School of MedicineUniversity of PaduaPaduaItaly
  2. 2.Department of Surgery, Oncology and Gastroenterology, Gastroenterology Unit, School of MedicineUniversity of PaduaPaduaItaly

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