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Reis Ribeiro P, Bandinelli MB, Viezzer Bianchi M, Brambatti G, de Campos Pereira V, Machado Sousa da Silva E, Souza Monteggia R, Driemeier D, Petinatti Pavarini S. Diffuse large B-cell lymphoma affecting the third eyelid of two young adult FeLV-infected cats. Vet Ophthalmol 2024. [PMID: 38800883 DOI: 10.1111/vop.13241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2023] [Revised: 04/16/2024] [Accepted: 05/20/2024] [Indexed: 05/29/2024]
Abstract
Lymphoma is one of the most frequently diagnosed tumors in FeLV-infected cats. Extranodal lymphomas include lymphomas in ocular and periocular tissues, such as the third eyelid (TEL), which is an uncommonly diagnosed type of lymphoma in cats. This study aimed to describe the clinicopathological features of lymphoma in the TEL of two FeLV-infected cats. A retrospective study in two anatomic pathology laboratories was performed, and two cases met the inclusion criteria. A 4-year-old, female cat (case 1), positive for FIV gp40 antigen and FeLV gp70 antigen by immunohistochemistry (IHC), and a male cat of 22 months old (case 2), positive both serologically for FeLV p27 antigen and for FeLV gp70 antigen by IHC, were referred to veterinary clinics with unilateral swelling and mass in the TEL, which had rapid growth in case 2. Histological and immunohistochemical analysis established the final diagnosis of diffuse large B-cell lymphoma in both cases. The cat in case 2 died 4 months after the diagnosis, with clinical worsening prior to death. Necropsy was not performed in either case, which precluded the definition of a primary or secondary involvement. However, the ocular lesions were the reason for consultation in both cases and it may have been an initial manifestation of a multicentric disease. Thus, FeLV-infected cats with clinical finding of eyelid swelling or mass formation should have lymphoma as a differential diagnosis, and a complete physical examination should be performed to detect extraocular involvement.
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Affiliation(s)
- Paula Reis Ribeiro
- Programa de Pós-graduação em Ciências Veterinárias (PPGCV), Faculdade de Veterinária, (FAVET), Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Rio Grande do Sul, Brazil
- Setor de Patologia Veterinária (SPV), Faculdade de Veterinária, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Rio Grande do Sul, Brazil
| | - Marcele Bettim Bandinelli
- Programa de Pós-graduação em Ciências Veterinárias (PPGCV), Faculdade de Veterinária, (FAVET), Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Rio Grande do Sul, Brazil
- Setor de Patologia Veterinária (SPV), Faculdade de Veterinária, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Rio Grande do Sul, Brazil
| | | | - Gustavo Brambatti
- Universidade de Caxias do Sul, Caxias do Sul, Rio Grande do Sul, Brazil
| | - Vanessa de Campos Pereira
- Programa de Pós-graduação em Ciências Veterinárias (PPGCV), Faculdade de Veterinária, (FAVET), Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Rio Grande do Sul, Brazil
- Setor de Patologia Veterinária (SPV), Faculdade de Veterinária, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Rio Grande do Sul, Brazil
| | - Emanoelly Machado Sousa da Silva
- Programa de Pós-graduação em Ciências Veterinárias (PPGCV), Faculdade de Veterinária, (FAVET), Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Rio Grande do Sul, Brazil
- Setor de Patologia Veterinária (SPV), Faculdade de Veterinária, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Rio Grande do Sul, Brazil
| | - Rafael Souza Monteggia
- Clínica Veterinária Lenita Mara Souza Monteggia, Porto Alegre, Rio Grande do Sul, Brazil
| | - David Driemeier
- Programa de Pós-graduação em Ciências Veterinárias (PPGCV), Faculdade de Veterinária, (FAVET), Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Rio Grande do Sul, Brazil
- Setor de Patologia Veterinária (SPV), Faculdade de Veterinária, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Rio Grande do Sul, Brazil
| | - Saulo Petinatti Pavarini
- Programa de Pós-graduação em Ciências Veterinárias (PPGCV), Faculdade de Veterinária, (FAVET), Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Rio Grande do Sul, Brazil
- Setor de Patologia Veterinária (SPV), Faculdade de Veterinária, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Rio Grande do Sul, Brazil
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van der Weyden L, Avenant A, O’Dell N. Cutaneous Plasmacytoma with Systemic Metastases in a Cape Serotine Bat ( Laephotis capensis). Vet Sci 2024; 11:72. [PMID: 38393090 PMCID: PMC10892064 DOI: 10.3390/vetsci11020072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Revised: 01/29/2024] [Accepted: 02/02/2024] [Indexed: 02/25/2024] Open
Abstract
Despite their relatively long life-spans, reports of neoplasia in bats are rare and are limited to a handful of cases. In this report, we describe a 2-year-old female wild Cape serotine bat (Laephotis capensis) that had been caught by a domestic cat and presented with a skin mass over the chest area. Histopathological analysis of a subsequent biopsy revealed proliferating sheets of neoplastic round cells, occasionally appearing to form packets, supported by a fine, fibrovascular stroma. Marked nuclear pleomorphism was seen, as well as a high mitotic count. Immunohistochemistry displayed positive labelling for MUM1 in the neoplastic cells. The diagnosis was extramedullary plasmacytoma (EMP); a neoplasm consisting of plasma cells derived from B lymphocytes. Due to a deteriorating condition, the bat was anaesthetised, and the mass was surgically removed two weeks later. However, the bat succumbed under the anaesthetic. Histopathological examination of the mass showed the same neoplastic cell population as observed in the biopsy; in addition, there was a locally extensive infiltration of neoplastic cells in the spleen and a mild presence of neoplastic cells in circulation. This is the first report of an EMP in a bat, and we compare the findings with that seen in dogs and cats.
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Affiliation(s)
| | - Alida Avenant
- Department of Paraclinical Sciences, Faculty of Veterinary Science, University of Pretoria, Onderstepoort 0110, South Africa;
| | - Nicolize O’Dell
- Department of Paraclinical Sciences, Faculty of Veterinary Science, University of Pretoria, Onderstepoort 0110, South Africa;
- Centre for Veterinary Wildlife Studies, Faculty of Veterinary Sciences, University of Pretoria, Onderstepoort 0110, South Africa
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