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Case Reports in Urology
Volume 2017, Article ID 4529853, 4 pages
Case Report

Primary Malignancy in a Supernumerary Testicle Presenting as a Large Pelvic Mass

1School of Medicine, University of Texas Medical Branch, Galveston, TX, USA
2Division of Urology, University of Texas Medical Branch, Galveston, TX, USA
3Department of Pathology, University of Texas Medical Branch, Galveston, TX, USA

Correspondence should be addressed to Daniel Farishta; ude.bmtu@hsirafzd

Received 10 March 2017; Revised 19 July 2017; Accepted 27 July 2017; Published 22 October 2017

Academic Editor: David Duchene

Copyright © 2017 Justin Noroozian et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Supernumerary testis, also known as polyorchidism, is a condition characterized by the presence of more than two testes. Another condition of the testes is seminoma, a common cause of testicular germ cell tumor. A 35-year-old male was transferred to our hospital with a diagnosis of abdominal mass causing abdominal pain. On physical exam, he had a palpable undescended left testicle in the left inguinal canal, which was determined to be seminoma. The mass was surgically removed, and the patient underwent chemotherapy. The report discusses his workup, treatment, and outcome. This case illustrates an unusual presentation of supernumerary testis with the extra testis harboring a seminoma. When presented with a case of testicular cancer with no tumor noted in the palpable testes, malignancy in an extranumerary testicle should be considered in the differential.