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Research Article Open access CC BY 4.0

Occurrence of an Abdominal Leiomyosarcoma in the Cyprinus carpio: Optical and Immunohistochemical Study

Luis Alberto Romano, Virgínia Fonseca Pedrosa

Asian Journal of Research in Zoology · pp. 10–19 · Published 1 May 2021

10.9734/ajriz/2021/v4i230109

Abstract

A capsulated nodular neoplasm measuring 9 cm in diameter, located between the swim bladder and the kidney sample of Cyprinuscarpio, was in laboratory. The neoplasm had a solid consistency in one sector and very adherent to the capsule. Histopathological examination of the neoplasm revealed a monotonous proliferation of spindle cells, and pleomorphic, sometimes in a vortex pattern and interspersed with collagen fibers. Cells had numerous well-oriented myofibrils giving them a deep red. The cytoplasm is eosinophilic and the nuclei are hyperchromatic located in the center with blunt or "cigar-shaped" ends. In the immunohistochemical examination, the tumor cells were positive for desmin, smooth muscle actin and K-47, the latter antibody showing significant cell proliferation. Due to histopathological and immunohistochemical findings, diagnosis was made with leiomyosarcoma.

Immunohistochemistry leiomyosarcoma Cyprinus carpio

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