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Comparative Clinical Pathology

, Volume 25, Issue 6, pp 1133–1136

First Online: 09 August 2016Received: 21 November 2015Accepted: 03 August 2016DOI: 10.1007-s00580-016-2316-z

Cite this article as: Farjanikish, G., Sayari, M., Raisi, A. et al. Comp Clin Pathol 2016 25: 1133. doi:10.1007-s00580-016-2316-z


A 7-year-old stallion with progressive left testicular enlargement was presented. Grossly, the excised testicle measured 25 × 15 × 12 cm and weighed 3.7 kg. It was multinodular with a gray-white surface; however, the right testis was normal. Histologically, the neoplastic cells were disseminated diffusely in the tumoral stroma with a minimal fibrovascular stroma. Neoplastic cells were round to polygonal with abundant eosinophilic cytoplasm and large round to oval vesicular or hyperchromatic nucleous with a single prominent nucleolus. Immunohistochemically, the neoplastic cells were positive nuclear immunostaining for C-KIT and negative for OCT3-4. According to gross, histopathological, and immunohistochemical characteristics, the diffuse type of seminoma was diagnosed. Nine months later, the follow-up observation of the case showed that the tumor had no recurrence and metastasis.

KeywordsStallion Seminoma Histopathology Immunohistochemistry  Download fulltext PDF

Autor: G. Farjanikish - M. Sayari - A. Raisi - S. Shirian

Fuente: https://link.springer.com/

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