{"paper_id":"6e5ae3a4-ea7b-4f83-95fd-3d46cea72844","body_text":"Definition\nBenign lesion characterized by proliferation of ectopic endometrial tissue.\nClinical Features\n-\nIncidence\nThe urinary tract is involved in less than 2% of all patients with endometriosis. In most cases, endometriosis is confined to urinary bladder; in these patients, the ureter is involved in about 15%, and the urethra and kidney in 1–2% (Comiter 2002). Only anecdotal cases have been reported in the prostate and in the epididymis after long-term antiandrogen therapy for prostatic adenocarcinoma (Beckman et al. 1985).\n-\nAge\nEndometriosis affects mainly reproductive age women. Uncommon cases may occur in old male patients after prolonged antiandrogen therapy.\n-\nSex\nStrong prevalence in the female.\n-\nSite\nBladder endometriosis is defined as deep infiltrating lesion in the detrusor muscle along the midline or in the bladder dome, but the most frequent location is the posterior bladder wall. Small implants at the vesicouterine fornix or in the peritoneum overlying the bladder cannot be...\nAccess this chapter\nTax calculation will be finalised at checkout\nPurchases are for personal use only\nReferences and Further Reading\nAl-Khawaja, M., Tan, P. H., MacLennan, G. T., et al. (2008). Ureteral endometriosis: Clinicopathological and immunohistochemical study of 7 cases. Human Pathology, 39, 954–959.\nBeckman, E. N., Pintado, S. O., Lenard, G. L., et al. (1985). Endometriosis of the prostate. The American Journal of Surgical Pathology, 9, 374.\nChapron, C., Boucher, E., Fauconnier, A., et al. (2002). Anatomopathological lesions of bladder endometriosis are heterogeneous. Fertility and Sterility, 78, 740–742.\nComiter, C. V. (2002). Endometriosis of the urinary tract. The Urologic Clinics of North America, 29, 625–635.\nSanfrancesco, J., Williamson, S. R., Kum, J. B., et al. (2017). Müllerian adenosarcoma of the urinary bladder: Clinicopathologic and immunohistochemical features with novel genetic aberrations. Clinical Genitourinary Cancer, 15, e1007–e1014.\nStern, R. C., Dash, R., Bentley, R. C., et al. (2001). Malignancy in endometriosis: Frequency and comparison of ovarian and extraovarian types. International Journal of Gynecological Pathology, 20, 133–139.\nAuthor information\nAuthors and Affiliations\nCorresponding author\nEditor information\nEditors and Affiliations\nRights and permissions\nCopyright information\n© 2020 Springer Nature Switzerland AG\nAbout this entry\nCite this entry\nRaspollini, M.R., Lopez-Beltran, A. (2020). Endometriosis. In: Raspollini, M.R., Lopez-Beltran, A. (eds) Uropathology. Encyclopedia of Pathology. Springer, Cham. https://doi.org/10.1007/978-3-030-41894-6_4808\nDownload citation\nDOI: https://doi.org/10.1007/978-3-030-41894-6_4808\nPublished:\nPublisher Name: Springer, Cham\nPrint ISBN: 978-3-030-41893-9\nOnline ISBN: 978-3-030-41894-6\neBook Packages: MedicineReference Module Medicine","source_license":"CC0","license_restricted":false}