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1 July 2010 Ovarian Interstitial Cell Tumor in a South American Sea Lion (Otaria flavescens)
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Abstract

A case of an ovarian tumor is reported in an 8-yr-old South American sea lion (Otaria flavescens) kept in a marine park in Malta (35.57°N, 14.25°E). The neoplasm was a solid mass of dense sheets and nests of round to polyhedral, irregularly shaped cells with abundant, finely vacuolated cytoplasm. The nuclei were uniformly small and round to oval. The supporting stroma contained thecal cells. The tumor cells were positive for positive inhibin and vimentin and focally positive for cytokeratin by immunohistochemistry. The neoplasm was diagnosed as an ovarian sex cord–stromal tumor, specifically an interstitial cell tumor.

Barbara Biancani, Geraldine Lacave, Gian Enrico Magi, and Giacomo Rossi "Ovarian Interstitial Cell Tumor in a South American Sea Lion (Otaria flavescens)," Journal of Wildlife Diseases 46(3), 1012-1016, (1 July 2010). https://doi.org/10.7589/0090-3558-46.3.1012
Received: 23 July 2008; Accepted: 1 February 2010; Published: 1 July 2010
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