Extratesticular interstitial and Sertoli cell tumors in previously neutered dogs and cats: a report of 17 cases |
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Authors: | Doxsee Angela L Yager Julie A Best Susan J Foster Robert A |
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Institution: | Department of Pathobiology, Ontario Veterinary College, University of Guelph, Guelph, Ontario. |
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Abstract: | Primary neoplasms derived from testicular tissue and in an extratesticular location are extremely rare. Clinical and surgical information was collected and verified from 15 different submitting practices for 12 dogs and 5 cats that spontaneously developed neoplasms of testicular origin after castration. Eleven dogs had Sertoli cell tumors in an extratesticular location. One dog and all 5 cats had an extratesticular interstitial cell tumor. Six animals (1 dog, 5 cats) had developed secondary sexual characteristics that reversed after removal of the tumor. All had a palpable mass in the scrotum or at the site of the original prescrotal incision. No animals died of neoplasia-related disease and no metastases were identified. Several possibilities, including the presence of embryological ectopic tissue or the presence of testicular tissue transplanted during castration, are considered as causal. |
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