Journal of the Chinese Medical Association
Volume 70, Issue 1 , Pages 33-35, January 2007

Villous Adenoma of the Ureter with Manifestation of Mucus Hydroureteronephrosis

  • Chi-Min Shih

      Affiliations

    • Division of Anatomic Pathology, St Joseph's Hospital, Yunlin, Taiwan, R.O.C.
    • ,
  • Sheng-Chuan Wu

      Affiliations

    • Division of Urology, Tzu-Ai General Hospital, Yunlin, Taiwan, R.O.C.
    • Corresponding Author InformationCorrespondence to: Dr Sheng-Chuan Wu, Division of Urology, Tzu-Ai General Hospital, 321-90, Sin-She, Si-Luo, Yun-Lin 648, Taiwan, R.O.C.
    • ,
  • Chueng-Chen Lee

      Affiliations

    • Department of Radiology, Tzu-Ai General Hospital, Yunlin, Taiwan, R.O.C.
    • ,
  • Chin-Chen Pan

      Affiliations

    • Department of Pathology, Taipei Veterans General Hospital, Taipei, Taiwan, R.O.C.
    • National Yang-Ming University School of Medicine, Taipei, Taiwan, R.O.C.

Received 3 March 2006; received in revised form 21 November 2006

Article Outline

Ureteral tumor is prone to result in lumen obstruction. Villous adenoma is most frequently found in the colon and rectum, seldom in the urinary tract and even more rarely in the ureter or pelvis. Herein, we present a case of bilateral renal stones of more than 10 years' duration with the chief complaint of right flank pain. Obstruction of the right upper ureter with hydroureteronephrosis was observed on sonography, computed tomography and retrograde pyelography. Ureteroscopy revealed papillary tumor obstructing the upper third of the ureter and inducing hydroureteronephrosis with abundant mucoid content. The ureteral tumor proved to be villous adenoma by pathologic examination. It should be noted that ureteral villous adenoma may be related to previous enteric-type metaplastic mucosa or ureteritis glandularis, demonstrates profuse production of mucus, and may eventually undergo malignant transformation.

Key Words:  hydronephrosis , hydroureter , mucus , ureteral tumor , villous adenoma

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PII: S1726-4901(09)70298-9

doi:10.1016/S1726-4901(09)70298-9

Journal of the Chinese Medical Association
Volume 70, Issue 1 , Pages 33-35, January 2007

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