Synonyms
Supernumerary testes
Definition and Characteristics
Polyorchidism is defined as the presence of two or more testes. Most patients are asymptomatic and present with a painless extra testicular mass during infancy or adolescence. Approximately 75% of the supernumerary testes are intrascrotal, 20% inguinal, and 5% intra-abdominal [1]. Triorchidism is the most common type of polyorchidism, but patients with five testes have been reported [1]. The supernumerary testis is usually superior to the ipsilateral testis and the size is smaller than the ipsilateral or contralateral testis (Fig. 1) [2].
Polyorchidism. Surgical exploration showed two testes on the left side. A single right testis was noted.
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Leung, A.K.C. (2009). Polyorchidism. In: Lang, F. (eds) Encyclopedia of Molecular Mechanisms of Disease. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-29676-8_3331
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DOI: https://doi.org/10.1007/978-3-540-29676-8_3331
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-67136-7
Online ISBN: 978-3-540-29676-8
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