Two Distinct Carcinomas of Mammary Gland Origin in a California Sea Lion

Michiko Matsuda; Shinichiro Hashiura; Yumi Une; Hiroshi Sirouzu; Yasuo Nomura

doi:10.7589/0090-3558-39.1.241

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1 January 2003 Two Distinct Carcinomas of Mammary Gland Origin in a California Sea Lion

Michiko Matsuda, Shinichiro Hashiura, Yumi Une, Hiroshi Sirouzu, Yasuo Nomura

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J. of Wildlife Diseases, 39(1):241-243 (2003). https://doi.org/10.7589/0090-3558-39.1.241

Abstract

Two histologic types of mammary cancer were encountered in an aged captive California sea lion (Zalophus californianus). A cancer with myoepithelial cell proliferation, which had metastasized to distant viscera, was located in the left cranial mammary region. Another cancer without myoepithelial cell proliferation was located in the right posterior mammary region, formed secondary nodules, and had metastasized to a regional lymph node. The presence of two different neoplasms in this sea lion is unusual.

Matsuda, Hashiura, Une, Sirouzu, and Nomura: Two Distinct Carcinomas of Mammary Gland Origin in a California Sea Lion

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Michiko Matsuda, Shinichiro Hashiura, Yumi Une, Hiroshi Sirouzu, and Yasuo Nomura "Two Distinct Carcinomas of Mammary Gland Origin in a California Sea Lion," Journal of Wildlife Diseases 39(1), 241-243, (1 January 2003). https://doi.org/10.7589/0090-3558-39.1.241

Received: 3 December 2000; Published: 1 January 2003

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