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  • Title: Outcomes of Median Arcuate Ligament Release: A Single Institution Retrospective Review.
    Author: Chen AJ, Yeh S, Dhindsa Y, Lawrence PF, Woo K.
    Journal: Ann Vasc Surg; 2023 Aug; 94():296-300. PubMed ID: 36924990.
    Abstract:
    BACKGROUND: Median arcuate ligament syndrome (MALS) is an uncommon diagnosis that is often associated with variable clinical presentation and inconsistent response to treatment. Due to the nature of MALS, the optimal treatment modality and predictors of outcomes remain unclear. METHODS: A retrospective review was performed of all median arcuate ligament release (MALR) procedures at a single academic institution between 2000 and 2020. Variables examined included patient demographics, symptom characteristics, operative technique (open, robotic, laparoscopic), patient symptoms before release, symptom relief within 1 year, and recurrence of symptoms between release and last clinical follow-up. RESULTS: During the study period, 47 patients (75% female, mean age 42.1 years) underwent MALR with 19 (36%) robotic, 18 (34%) open, 14 (26%) laparoscopic, and 2 (4%) laparoscopic converted to open procedures. Abdominal pain, weight loss, and nausea and vomiting were the most common symptoms. Postoperatively, 19 (40%) had complete symptom relief within 1 year, 18 (38%) had partial relief, and 10 (21%) had no symptom improvement. 6 were excluded due to loss of follow-up. Laparoscopic and open procedures had the highest rate of complete symptom relief by year 1 with 7 (58%) and 8 (50%) respectively. Twenty-one (57%) patients had recurrence with the greatest rate of recurrence seen among laparoscopic (80%), compared to robotic (57%) and open (38%). Patients reporting a weight loss of 20 pounds or more before surgery were more likely to have partial or complete symptom relief after 1 year compared to those reporting less than 20-pound weight loss (92% vs. 64%). Furthermore, 84% of patients younger than 60 years old reported partial or complete symptom relief compared to only 56% of those older than 60. CONCLUSIONS: MALS continues to be a rare disorder with widely variable surgical outcomes, requiring further study. While our patients presented with several gastrointestinal symptoms, the most common was postprandial pain. Our center employed laparoscopic, open, and robotic operative techniques with varying success rates, in terms of symptom relief and recurrence. Consistent with current literature, our study found greater surgical success among patients younger than 60 years regardless of operative technique. This suggests the need for better predictors to determine which patients are the most likely to have complete or prolonged remission of symptoms following MALR.
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