Lipedema after Bariatric and Metabolic Surgery: A Scoping Review.

[BACKGROUND] Lipedema often remains undiagnosed in patients with obesity, leading to mismanagement of treatment. Because of this, despite remarkable weight loss after bariatric surgery and decreases in hip and abdomen circumference, some patients show only small decreases in the circumference of the extremities and report persistent limb pain. We present the first scoping review to systematically explore the reported patient characteristics, clinical outcomes, and diagnostic challenges of lipedema in patients undergoing metabolic bariatric surgery, to identify gaps in current practice and promote earlier diagnosis and tailored treatment.

[METHODS] A search in PubMed, Embase, Medline, and Cochrane was conducted, from inception to December 19th, 2023. We consider as inclusion criteria original articles, case reports, and case series of lipedema after metabolic bariatric surgery.

[RESULTS] Among the included studies, a total of 49 patients were reported, and all were female. The mean age of cases was 42.43 (range 24-63) years old, and the mean BMI was 49.92 kg/m. In the majority of the included patients, a sleeve gastrectomy was performed (25 patients, 51%), Roux-en-Y in 22 patients (45%), and One anastomosis Gastric Bypass in 2 (4%). Forty-eight patients had lipedema diagnosed after bariatric surgery. The mean excess weight loss was 70.93%, and the mean total weight loss was 36%. The mean pain score increased after surgery with 7.92 compared to 7.30 before surgery.

[CONCLUSION] Recognizing the presence of lipedema in females experiencing extremity pain and disproportionate fat distribution is crucial. Bariatric surgery alone does not appear to significantly improve lipedema-related symptoms, based on currently available evidence, and even significant excess weight loss of more than 70% often fails to alleviate its associated pain.