{"paper_id":"6754f12a-6d6e-491c-b4f1-6bdde85d2e73","body_text":"Summary\nBackground\nPatients suffering from colorectal deep endometriosis (DE) experience gastrointestinal symptoms with almost the same frequency as gynecological pain symptoms. Preoperatively existing gastrointestinal symptoms may translate into pathological gastrointestinal quality of life index (GIQLI) and low anterior resection syndrome scores (LARS). This prospective questionnaire-based case control study aims to assess the prevalence of gastrointestinal complaints reflected by changes in LARS and GIQLI scores in patients with colorectal deep endometriosis prior to surgical treatment and compare those to a healthy control group.\nMethods\nThe study was conducted at the Hospital St. John of God in Vienna and included a total of 97 patients with histologically confirmed colorectal DE with radical surgical treatment and 96 women in whom DE was excluded via transvaginal sonography (TVS) or visually. Gastrointestinal symptoms reflected by LARS and GIQLI scores were evaluated presurgically and in controls.\nResults\nA total of 193 premenopausal patients were included in this study. A mean GIQLI of 90.7 ± 22.0 and 129.4 ± 11.1 was observed among patients and controls, respectively, showing a significantly higher morbidity concerning gastrointestinal symptoms and decreased quality of life (QoL) compared to healthy controls (p < 0.001). The LARS score results demonstrated that 18.6% of the patients with bowel DE presented with a major LARS and 27.8% with a minor LARS presurgically compared to 2.1% and 9.4% of control patients, respectively (p < 0.001).\nConclusion\nPatients with colorectal DE experience a quality of gastrointestinal symptoms translating into a decreased QoL and pathological GIQLI and LARS scores already presurgically. 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Dauser: study design, manuscript writing; G. Hudelist: study design, manuscript writing. All authors approved the final manuscript.\nCorresponding author\nEthics declarations\nConflict of interest\nL. M. Reh, E. Darici, E. Montanari, J. Keckstein, B. Senft, B. Dauser, and G. Hudelist declare that they have no competing interests.\nEthical approval\nThe study was approved on 17 November 2020 by the ethics committee/IRB of the Hospital St. John of God in Vienna, Austria.\nAdditional information\nPublisher’s Note\nSpringer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.\nLena Maria Reh and Ezgi Darici contributed equally to this work.\nRights and permissions\nAbout this article\nCite this article\nReh, L.M., Darici, E., Montanari, E. et al. Differences in intensity and quality of bowel symptoms in patients with colorectal endometriosis. Wien Klin Wochenschr 134, 772–778 (2022). https://doi.org/10.1007/s00508-022-02088-x\nReceived:\nAccepted:\nPublished:\nVersion of record:\nIssue date:\nDOI: https://doi.org/10.1007/s00508-022-02088-x","source_license":"public-domain-us","license_restricted":false}