title: Ectopic decidual reaction in the urinary bladder presenting as a vesical tumor.
abstract: A urinary bladder tumor in young pregnant women is a very rare finding. It may bring diagnostic problems despite use of advanced imaging techniques. We report on a case of an exceedingly rare occurrence of a decidual reaction in the urinary bladder of a pregnant young woman. To the best of our knowledge, it is the first such case reported in published medical data. The final diagnosis was possible only after histopathologic assessment of a specimen obtained during diagnostic cystoscopy, which showed typical decidual changes within detrusor muscle, without ectopic endometrium, which could suggest more frequent vesical endometriosis.
authors.affiliation: Department of Urology, Postgraduate Medical Educational Center, Warsaw, Poland. tomasz@urologia.waw.pl
authors.forename: Tomasz R
authors.initials: TR
authors.lastname: Szopiński
authors.forename: Iwona
authors.initials: I
authors.lastname: Sudoł-Szopińska
authors.forename: Tomasz
authors.initials: T
authors.lastname: Dzik
authors.forename: Andrzej
authors.initials: A
authors.lastname: Borówka
mesh_terms: D003937:Diagnosis, Differential; D010064:Embryo Implantation; D005260:Female; D006801:Humans; D011247:Pregnancy; D011248:Pregnancy Complications / Q000175:diagnosis*; D001745:Urinary Bladder Diseases / Q000175:diagnosis*; D001749:Urinary Bladder Neoplasms / Q000175:diagnosis; D055815:Young Adult