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This study aimed to examine the radiological features of aorto-mesenteric (A-M) space reduction in anorexia nervosa and their association with digestive complaints.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>Female patients with anorexia nervosa and a history of computerized tomography angiography for digestive complaints were included. Clinical data were retrospectively collected and computerized tomography scans were reviewed by an independent, experienced radiologist to identify signs of SMAS and of Nutcracker syndrome. Adipose tissue surfaces were also calculated from the scans. Some patients were reassessed after nutritional recovery.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      On the 51 female patients included (mean age 27.7\u2009\u00b1\u200912.3 years) from a cohort of 202 female anorexia nervosa patients, 48 met radiological criteria for SMAS (A-M angle\u2009&lt;\u200925\u00b0 or distance\u2009\u2264\u20098\u00a0mm). A duodenal dilation was present in 35 patients (68.6%) and a left renal vein dilation in 39.2%. The type of digestive complaints did not differ significantly between patients with and without duodenal dilation, although gastroesophageal reflux approached statistical significance (\n                      <jats:italic>p<\/jats:italic>\n                      \u2009=\u20090.06). Body mass index and visceral adipose tissue did not correlate significantly with A-M measurements. Following nutritional recovery in ten patients, there was a significant increase in A-M measurements and a decrease in both duodenal dilation and digestive symptoms.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>Radiological features of A-M space reduction are common in anorexia nervosa. Left renal vein compression and its upstream dilation, as well as left dilated ovarian vein and pelvic varicose veins, are frequently associated with radiological signs of SMAS. Nutritional support alleviates digestive complaints related to SMAS.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1186\/s40337-026-01566-1","type":"journal-article","created":{"date-parts":[[2026,3,6]],"date-time":"2026-03-06T01:04:32Z","timestamp":1772759072000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Aorto-mesenteric space reduction in women with anorexia nervosa: retrospective audit and analysis"],"prefix":"10.1186","volume":"14","author":[{"given":"L\u00e9o","family":"Taieb","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yacine","family":"Meziane","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yohann","family":"Renard","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Marion","family":"Barrois","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Cyril","family":"Cosse","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Christine","family":"Hoeffel","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Guillaume","family":"Cadiot","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Eric","family":"Bertin","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"297","published-online":{"date-parts":[[2026,3,6]]},"reference":[{"key":"1566_CR1","first-page":"303","volume":"61","author":"R Postmus","year":"1962","unstructured":"Postmus R, Thieme ET. 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It should be noted that, in accordance with current French legislation, retrospective studies using information recorded in patients\u2019 medical records as part of daily care practice, by medical and nursing staff caring for the patient, do not require written informed consent. Patients\u2019 medical records of the Reims university hospital are authorized by the French data protection authority (CNIL Declaration number : 2049775 v 0). Patients are kindly informed of this practice through the welcome booklet systematically given to them and by the internal display at the hospital. If the patient wishes, he or she has the right to object to this nominative collection and can request anonymization in the patient record information system. In accordance with French legislation, each patient received information about this retrospective study on existing data, including details on the type of data collected and the purpose of the study. After receiving this information, patients were free to refuse to participate if they wished. In the absence of explicit refusal, all the patients were considered to have consented. We confirm that the computerized data were protected and stored in accordance with French legislation and European Data Protection Rules. The data were anonymized before extraction and statistical processing, in accordance with good practices in epidemiological studies.","order":2,"name":"Ethics","group":{"name":"EthicsHeading","label":"Ethics approval and consent to participate"}},{"value":"The authors declare no competing interests.","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Competing interests"}}],"article-number":"90"}}