title: Two- and three-dimensional sonographic findings in a case of distal urethral obstruction due to a paraurethral tumor.
abstract: The cause of bladder outlet obstruction in women may be categorized generally into two types, functional and anatomical. On ultrasonography, the urethra appears as a tubular structure with a central echolucent part and surrounding hyperechogenic structures. Morphological changes in the echolucent portion of the urethra have been reported to be associated with voiding dysfunction. We present a case of distal urethral obstruction secondary to metastatic paraurethral adenocarcinoma. Three-dimensional sonography clearly demonstrated the configuration of the metastatic tumor and its spatial orientation in association with distal urethral obstruction.
authors.affiliation: Division of Urogynecology, Department of Obstetrics and Gynecology, Mackay Memorial Hospital, Taipei, Taiwan.
authors.forename: J-M
authors.initials: JM
authors.lastname: Yang
authors.forename: S-H
authors.initials: SH
authors.lastname: Yang
authors.forename: W-C
authors.initials: WC
authors.lastname: Huang
mesh_terms: D000230:Adenocarcinoma / Q000150:complications / Q000000981:diagnostic imaging* / Q000556:secondary; D005260:Female; D006801:Humans; D021621:Imaging, Three-Dimensional; D008113:Liver Neoplasms / Q000556:secondary / Q000601:surgery; D008875:Middle Aged; D012004:Rectal Neoplasms / Q000150:complications / Q000601:surgery; D018608:Ultrasonography, Doppler / Q000379:methods*; D014521:Urethra / Q000000981:diagnostic imaging; D014523:Urethral Neoplasms / Q000150:complications / Q000000981:diagnostic imaging* / Q000556:secondary; D014524:Urethral Obstruction / Q000000981:diagnostic imaging* / Q000209:etiology* / Q000601:surgery