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Ferreira Junior JA, Leonardo AS, Pavarini SP, Nascimento KA, Macêdo JTSA, Pedroso PMO. Undifferentiated pleomorphic sarcoma in a white-eared opossum (Didelphisalbiventris). J Comp Pathol 2023; 206:32-35. [PMID: 37748301 DOI: 10.1016/j.jcpa.2023.08.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Revised: 10/09/2022] [Accepted: 08/20/2023] [Indexed: 09/27/2023]
Abstract
We report a case of high-grade undifferentiated pleomorphic sarcoma in a free-living white-eared opossum (Didelphis albiventris) in Central Brazil. Grossly, it appeared as a soft yellow mass, approximately 8 cm in diameter, with an irregular, adherent and ulcerated surface, which extended from the proximal epiphysis of the femur to the proximal third of the tibia and fibula. The mass invaded the medullary cavity and had a necrotic centre. Multiple nodular metastases (0.5-1.5 cm) were present in the liver, lungs and spleen. Histologically, the neoplasm was characterized by pleomorphic cells with indistinct boundaries, many multinucleated cells, necrosis and tissue invasion. There was intense cytoplasmic immunolabelling of neoplastic cells for vimentin and moderate cytoplasmic and nuclear labelling for human muscle actin, human smooth muscle actin and lysozyme. Immunolabelling for Iba1, CD18, CD1A, cytokeratin AE1/AE3, glial fibrillary acidic protein and desmin was negative. To our knowledge, this is the first report of an undifferentiated pleomorphic sarcoma in this species.
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Affiliation(s)
- Jair A Ferreira Junior
- Laboratório de Patologia Veterinária, Universidade de Brasília, Brasília, Distrito Federal, Brazil
| | | | - Saulo P Pavarini
- Department of Veterinary Pathology, College of Veterinary Medicine, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | - Karla A Nascimento
- Laboratório de Patologia Veterinária, Universidade de Brasília, Brasília, Distrito Federal, Brazil
| | - Juliana T S A Macêdo
- Laboratório de Patologia Veterinária, Universidade de Brasília, Brasília, Distrito Federal, Brazil
| | - Pedro M O Pedroso
- Laboratório de Patologia Veterinária, Universidade de Brasília, Brasília, Distrito Federal, Brazil.
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Salord Torres X, Dobromylskyj M, Sánchez Jiménez C, Plested M, Purzycka K, Phillips M, Mullowney D. Bilateral renal histiocytic sarcoma with disseminated lung involvement in a Siberian Forest Cat. JFMS Open Rep 2023; 9:20551169231191076. [PMID: 37614780 PMCID: PMC10443916 DOI: 10.1177/20551169231191076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/25/2023] Open
Abstract
Case summary A 5-year-old female neutered Siberian Forest Cat presented with a 7-day history of lethargy, hyporexia and weight loss. Abdominal ultrasonography revealed bilateral renal changes suggestive of neoplasia. Thoracic radiography documented diffuse pulmonary nodules. The cat was euthanased during diagnostic investigations. Histopathological assessment and immunohistochemical staining of post-mortem renal biopsies were consistent with a histiocytic lesion, most likely histiocytic sarcoma (HS). The lung lesions were suspected of representing disseminated disease. Relevance and novel information HS is considered a rare neoplastic process in cats. This report describes a case of feline bilateral renal HS with suspected concomitant pulmonary involvement. A primary renal origin was suspected, with the lung lesions being a result of disseminated disease. Renal HS should be included as a differential diagnosis when renal ultrasonography reveals changes suggestive of neoplasia.
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Affiliation(s)
| | | | | | - Mark Plested
- Lumbry Park Veterinary Specialists (CVS Group), Alton, Hampshire, UK
| | | | | | - Deirdre Mullowney
- Lumbry Park Veterinary Specialists (CVS Group), Alton, Hampshire, UK
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Holanda AGA, Cesário BC, Silva VM, Francelino LEC, Nascimento BHM, Damasceno KFA, Ishikawa U, Farias NBS, Junior RFA, Barboza CAG, Junior CA, Antunes JMAP, Moura CEB, Queiroz GF. Use of Cold Atmospheric Plasma in the Treatment of Squamous Cell Carcinoma: in vitro Effects and Clinical Application in Feline Tumors: A Pilot Study. Top Companion Anim Med 2023; 53-54:100773. [PMID: 36990177 DOI: 10.1016/j.tcam.2023.100773] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Revised: 01/19/2023] [Accepted: 03/22/2023] [Indexed: 03/29/2023]
Abstract
Cold atmospheric plasma (CAP) has shown promising results against squamous cell carcinoma (SCC) in both in vivo and in vitro assays, mainly in humans and mice. Its applicability for treatment of feline tumors, however, remains unknown. This study aimed to evaluate the anticancer effects of CAP on a head and neck squamous cell carcinoma (HNSCC) cell lineage and against a clinical case of cutaneous SCC in a cat. Control and treatment groups employing the HNSCC cell line (SCC-25) were used, the latter exposed to CAP for 60 seconds, 90 seconds, or 120 seconds. The cells were subjected to the MTT assay nitric oxidation assay and thermographic in vitro analyses. The clinical application was performed in one cat with cutaneous SCC (3 sites). The lesions were treated and evaluated by thermographic, histopathological, and immunohistochemical examinations (caspase-3 and TNF-alpha). Treatment of the SCC-25 cells for 90 seconds and 120 seconds resulted in a significant nitrite concentration increase. Decreased cell viability was observed after 24 hours and 48 hours, regardless of exposure time. However, the cell viability reduction observed at 72 hours was significant only in the 120 seconds treatment. In vitro, the temperature decreased for all treatment times, while the plasma induced a slight increase in mean temperature (0.7°C) in the in vivo assay. Two of the 3 clinical tumors responded to the treatment: one with a complete response and the other, partial, while the third (lower lip SCC) remained stable. Both remaining tumors displayed apoptotic areas and increased expression of caspase-3 and TNF-alpha. Adverse effects were mild and limited to erythema and crusting. The CAP exhibited an in vitro anticancer effect on the HNSCC cell line, demonstrated by a dose-dependent cell viability reduction. In vivo, the therapy appears safe and effective against feline cutaneous SCC. The treatment did not result in a clinical response for 1 of 3 lesions (proliferative lower lip tumor), however, a biological effect was still demonstrated by the higher expression of apoptosis indicators.
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Affiliation(s)
- André G A Holanda
- Department of Animal Sciences, Federal Rural University of the Semi-Arid, Mossoró, RN, Brazil.
| | - Bruna C Cesário
- Department of Animal Sciences, Federal Rural University of the Semi-Arid, Mossoró, RN, Brazil
| | - Victória M Silva
- Department of Animal Sciences, Federal Rural University of the Semi-Arid, Mossoró, RN, Brazil
| | - Luiz E C Francelino
- Department of Animal Sciences, Federal Rural University of the Semi-Arid, Mossoró, RN, Brazil
| | - Bruno H M Nascimento
- Department of Animal Sciences, Federal Rural University of the Semi-Arid, Mossoró, RN, Brazil
| | - Kássia F A Damasceno
- Department of Animal Sciences, Federal Rural University of the Semi-Arid, Mossoró, RN, Brazil
| | - Uta Ishikawa
- Department of Morphology, Federal University of Rio Grande do Norte, Natal, RN, Brazil
| | - Naisandra B S Farias
- Department of Morphology, Federal University of Rio Grande do Norte, Natal, RN, Brazil
| | - Raimundo F A Junior
- Department of Morphology, Federal University of Rio Grande do Norte, Natal, RN, Brazil
| | - Carlos A G Barboza
- Department of Morphology, Federal University of Rio Grande do Norte, Natal, RN, Brazil
| | - Clodomiro A Junior
- Department of Natural Sciences, Mathematics and Statistics, Federal Rural University of the Semi-Arid, RN, Brazil
| | - João M A P Antunes
- Department of Animal Sciences, Federal Rural University of the Semi-Arid, Mossoró, RN, Brazil
| | - Carlos E B Moura
- Department of Animal Sciences, Federal Rural University of the Semi-Arid, Mossoró, RN, Brazil
| | - Genilson F Queiroz
- Department of Animal Sciences, Federal Rural University of the Semi-Arid, Mossoró, RN, Brazil
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Stone MD, Davies RK, Kridel HA. Pericardial effusion secondary to epicardial undifferentiated pleomorphic sarcoma in a young cat. JFMS Open Rep 2023; 9:20551169231162484. [PMID: 37168487 PMCID: PMC10164846 DOI: 10.1177/20551169231162484] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/13/2023] Open
Abstract
Case summary A 6.4 kg 3-year-old male neutered indoor-outdoor domestic shorthair cat was referred for further evaluation of non-resolving lethargy and hyporexia of 4 days' duration. Physical examination identified tachypnea with mild respiratory effort and muffled lung sounds bilaterally. Point-of-care ultrasound revealed a large volume of pleural and pericardial effusion (PCE), which was confirmed by thoracic radiography. Echocardiogram indicated normal cardiac function but revealed a mass-like structure along the left epicardium within the pericardial space. After 72 hours in hospital, re-evaluation via echocardiogram showed the epicardial mass lesion to have doubled in size and with apparent extension to involve the pericardium. The patient was hospitalized for 72 h of supportive care and intervention, including therapeutic pericardiocentesis, bilateral thoracocentesis, thoracic and cardiac imaging and infectious disease testing. On the third day of hospitalization, the patient developed cardiac tamponade. Further workup was discussed, including CT and subtotal pericardiectomy with biopsy, but the cat was euthanized due to clinical decline and rapid re-accumulation of effusion. Post-mortem histopathologic evaluation diagnosed an epicardial pleomorphic sarcoma, exclusive of mesothelioma or histiocytic sarcoma on immunohistochemistry (IHC). Relevance and novel information This report describes a case of epicardial undifferentiated pleomorphic sarcoma (UPS) in a young cat presenting with pleural and PCE. Pleomorphic sarcoma is a rarely reported mesenchymal neoplasia in the feline patient and has thus far primarily been identified in peripheral soft tissue structures. IHC is key to the correct histopathologic diagnosis. To our knowledge, epicardial UPS has not been previously reported in a cat.
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Affiliation(s)
- Marisa D Stone
- Ocean State Veterinary Specialists, East Greenwich, RI, USA
- Marisa D Stone DVM, Ocean State Veterinary Specialists, 1480 S County Trail, East Greenwich, RI 02818, USA
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Dobromylskyj M. Feline Soft Tissue Sarcomas: A Review of the Classification and Histological Grading, with Comparison to Human and Canine. Animals (Basel) 2022; 12:ani12202736. [PMID: 36290122 PMCID: PMC9597747 DOI: 10.3390/ani12202736] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Revised: 10/07/2022] [Accepted: 10/10/2022] [Indexed: 11/07/2022] Open
Abstract
Simple Summary Soft tissue sarcomas are a common form of cancer arising in the skin and connective tissues of domestic cats. Soft tissue sarcomas encompass a group of different histological subtypes of tumours, which can behave in a range of different ways in the patient. In dogs and in humans, this group of tumours can be given a histological score (“grade”) at the time of diagnosis, which is prognostic, but there is no equivalent, well-established grading system for these tumours in cats. This review looks at soft tissue sarcomas in terms of which histological subtypes of tumour should be included in this group, and how pathologists approach their grading, comparing feline tumours with their human and canine counterparts. Abstract Soft tissue sarcomas are one of the most commonly diagnosed tumours arising in the skin and subcutis of our domestic cats, and are malignant neoplasms with a range of histological presentations and potential biological behaviours. However, unlike their canine and human counterparts, there is no well-established histological grading system for pathologists to apply to these tumours, in order to provide a more accurate and refined prognosis. The situation is further complicated by the presence of feline injection site sarcomas as an entity, as well as confusion over terminology for this group of tumours and which histological types should be included. There is also an absence of large scale studies. This review looks at these tumours in domestic cats, their classification and histological grading, with comparisons to the human and canine grading system.
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Affiliation(s)
- Melanie Dobromylskyj
- Histopathology Department, Finn Pathologists, One Eyed Lane, Weybread, Diss IP21 5TT, Norfolk, UK
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Serpa PBS, Corriveau LA, Dos Santos AP. What is your diagnosis? Abdominal mass in a rat. Vet Clin Pathol 2022; 51:164-167. [PMID: 35165909 DOI: 10.1111/vcp.13020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Revised: 02/10/2021] [Accepted: 03/19/2021] [Indexed: 11/29/2022]
Affiliation(s)
- Priscila B S Serpa
- Department of Comparative Pathobiology, Purdue University College of Veterinary Medicine, West Lafayette, Indiana, USA
| | - Lorraine A Corriveau
- Purdue University Veterinary Teaching Hospital, Purdue University College of Veterinary Medicine, West Lafayette, Indiana, USA
| | - Andrea P Dos Santos
- Department of Comparative Pathobiology, Purdue University College of Veterinary Medicine, West Lafayette, Indiana, USA
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Bonazzi I, Morabito S, Brunetti B, Nicoli S, Valenti P. Primary diaphragmatic undifferentiated pleomorphic sarcoma in a cat. JFMS Open Rep 2021; 7:20551169211018992. [PMID: 34158969 PMCID: PMC8186119 DOI: 10.1177/20551169211018992] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Case summary A 5-year-old neutered female domestic shorthair cat was referred for acute onset of dyspnoea. Thoracic radiographs performed by the referring veterinarian revealed the presence of pleural effusion. Upon presentation, the cat was dyspnoeic, and cardiopulmonary auscultation revealed muffled heart sounds and bilaterally increased bronchovesicular sounds. Radiographic study of the thorax revealed bilateral pleural effusion and a soft tissue opacity in the dorsocaudal region of the left hemithorax. A whole-body contrast-enhanced CT scan identified a soft tissue mass arising from the left diaphragmatic crus. Transthoracic ultrasound-guided fine-needle aspiration (FNA) of the mass was performed and the result was consistent with a malignant mesenchymal neoplasia, showing giant cells. Cytoreductive surgery was performed and the histopathology diagnosis of undifferentiated pleomorphic sarcoma was made. Adjuvant chemotherapy was then offered. Ten days after surgery pleural effusion recurred. Thoracic echography revealed the presence of a diaphragmatic thickening in the area of surgical resection. FNA of the thickening was consistent with mesenchymal neoplasia. Even when chemotherapy and supportive treatment with pain relief was instituted, the clinical condition of the cat worsened within a few days and it was euthanased 1 month after surgery. Relevance and novel information Primary diaphragmatic tumours (PDTs) have been rarely reported in human and in veterinary medicine, where only three cases have been described in the dog. To our knowledge, this is the first report to describe a PDT, specifically an undifferentiated pleomorphic sarcoma, in a cat.
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Affiliation(s)
- Irene Bonazzi
- Veterinary Hospital of Portoni Rossi, Zola Predosa, Bologna, Italy
| | - Simona Morabito
- Veterinary Hospital of Portoni Rossi, Zola Predosa, Bologna, Italy
| | - Barbara Brunetti
- Department of Veterinary Medical Sciences, University of Bologna, Ozzano dell'Emilia, Bologna, Italy
| | - Stefano Nicoli
- Veterinary Hospital of Portoni Rossi, Zola Predosa, Bologna, Italy
| | - Paola Valenti
- Veterinary Hospital of Portoni Rossi, Zola Predosa, Bologna, Italy
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