biostudies-literatureUnknown305(4)Blum SUniversitätsklinikum Erlangen<h4>Purpose</h4>In many diseases, it is possible to classify a heterogeneous group into subgroups relative to tumor biology, genetic variations, or clinical and pathological features. No such classification is available for endometriosis. In our retrospective case-case analysis we defined subgroups of endometriosis patients relative to the type and location of the endometriosis lesion and relative to basic patient characteristics.<h4>Methods</h4>From June 2013 to July 2017, a total of 1576 patients with endometriosis diagnosed at surgery were included in this study. The patients' history and clinical data were documented using a web-based remote data entry system. To build subgroups, all possible combinations of endometriosis locations/types (peritoneal; ovarian endometriosis; deeply infilArchives of gynecology and obstetrics977-984https://www.ebi.ac.uk/biostudies/studies/S-EPMC8967757biostudies-literatureComprehensive characterization of endometriosis patients and disease patterns in a large clinical cohort.PMC8967757Heindl FBecker KLubrich HHeusinger KBorn TFasching PALermann JBurghaus SHildebrandt TAntoniadis SBeckmann MWFahlbusch CBlum SHein AfalseComprehensive characterization of endometriosis patients and disease patterns in a large clinical cohort.<h4>Purpose</h4>In many diseases, it is possible to classify a heterogeneous group into subgroups relative to tumor biology, genetic variations, or clinical and pathological features. No such classification is available for endometriosis. In our retrospective case-case analysis we defined subgroups of endometriosis patients relative to the type and location of the endometriosis lesion and relative to basic patient characteristics.<h4>Methods</h4>From June 2013 to July 2017, a total of 1576 patients with endometriosis diagnosed at surgery were included in this study. The patients' history and clinical data were documented using a web-based remote data entry system. To build subgroups, all possible combinations of endometriosis locations/types (peritoneal; ovarian endometriosis; deeply infil2022-01-01T00:00:00Z2022 Apr2025-04-04T08:24:26.385Z2025-04-04T08:24:26.385ZS-EPMC89677573444803910.1007/s00404-021-06200-w