Peer-reviewed veterinary case report
Orbital (retrobulbar) meningioma in a Simmental cow.
- Journal:
- Veterinary pathology
- Year:
- 2007
- Authors:
- Reis, J L et al.
- Affiliation:
- Faculdade de Agronomia e Medicina Veteriná · Brazil
Abstract
A 12-year-old Simmental cow was presented with a moderately firm irregular whitish mass of approximately 5 cm in diameter, occupying the right orbit. Microscopically, a poorly differentiated neoplasm was observed. The immunohistochemical panel included cytokeratins, vimentin, epithelial membrane antigen, Factor VIII, CD34, Mart-1, Melan A, smooth muscle actin, desmin, chromogranin, neuron-specific enolase, S-100 protein, and MIB-1. The neoplasm was negative for all of them, with the exception of vimentin and S-100 protein. Transmission electron microscopy revealed abundant desmosomes. These findings support the diagnosis of orbital (retrobulbar) meningioma.
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Search related cases →Original publication: https://pubmed.ncbi.nlm.nih.gov/17606511/