Peer-reviewed veterinary case report
Dog with rectal plasmacytoma containing hemosiderin pigment
By Rannou, B et al.·Published in Veterinary pathology·2009·Veterinary Medicine Faculty, Canada·View original on PubMed →
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Original publication title: Rectal plasmacytoma with intracellular hemosiderin in a dog.
- Species:
- dog
Plain-English summary
An 11-year-old female American Cocker Spaniel was brought to the vet because of a mass that was sticking out from her rectum. Tests showed that the mass was a type of tumor called a plasmacytoma, which is made up of abnormal plasma cells. The vet also found some unusual granules in the cells, which were identified as hemosiderin, a substance that can build up in the body. This case is notable because it's the first time this type of plasmacytoma with hemosiderin has been reported in a dog. Treatment options would typically depend on the specific diagnosis and may include surgery or other therapies.
People also search for: dog rectal mass treatment · Cocker Spaniel tumor symptoms · plasmacytoma in dogs
Abstract
An 11-year-old female American Cocker Spaniel was presented with a rectal mass that protruded through the anus. Cytologically, the mass was composed of neoplastic round cells consistent with an extramedullary plasmacytoma. Histiocytic sarcoma, carcinoid tumor, and melanoma were also considered because of the presence of golden-brown cytoplasmic granules. Histopathologic findings and immunohistochemical reactivity for lambda light chains confirmed the cytologic diagnosis of plasmacytoma. Prussian blue staining identified the cytoplasmic granules as hemosiderin. The granules were negative by Fontana Masson and Grimelius histochemistry. To our knowledge, this is the first report of an extramedullary plasmacytoma containing hemosiderin in a dog.
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Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/19605892/