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NAM DY, JANG SH, YIM SJ, KIM JH, JUNG JY. Malignant peripheral nerve sheath tumor in the kidney of a dog. J Vet Med Sci 2024; 86:312-316. [PMID: 38296525 PMCID: PMC10963088 DOI: 10.1292/jvms.23-0385] [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: 09/11/2023] [Accepted: 01/11/2024] [Indexed: 03/19/2024] Open
Abstract
A 12-year-old castrated male poodle presented with vomiting and diarrhea. Ultrasonography and computed tomography revealed a protruding mass at the caudal pole of the left kidney. Grossly, the poorly circumscribed abnormal mass was 1.6 × 1.8 × 1.9 cm in size and had multifocal dark-red foci. Microscopically, it was composed of densely or loosely packed variable-sized short spindle or ovoid cells. These neoplastic cells showed high pleomorphism, mitotic figures, and invasive tendency to the adjacent tissue. Immunohistochemically, the neoplastic spindle cells expressed vimentin, S100, neuron-specific enolase, nerve growth factor receptor, and laminin. Therefore, the mass was diagnosed as a malignant peripheral nerve sheath tumor (MPNST). To our knowledge, this is the first report of primary renal MPNST in a dog.
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Affiliation(s)
- Da-Ye NAM
- College of Veterinary Medicine and Veterinary Medical Research Institute, Jeju National University, Jeju, Korea
| | | | - So-Jeong YIM
- College of Veterinary Medicine and Veterinary Medical Research Institute, Jeju National University, Jeju, Korea
| | - Jae-Hoon KIM
- College of Veterinary Medicine and Veterinary Medical Research Institute, Jeju National University, Jeju, Korea
| | - Ji-Youl JUNG
- College of Veterinary Medicine and Veterinary Medical Research Institute, Jeju National University, Jeju, Korea
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Hidari K, Nakamoto Y, Sakurai K, Sakurai Y, Nibe K, Nakamoto M. Case report: Presumptive subcutaneous malignant peripheral nerve sheath tumor with intracranial invasion and osteolysis in the posterior fossa of a dog. Front Vet Sci 2022; 9:977099. [PMID: 36425125 PMCID: PMC9679371 DOI: 10.3389/fvets.2022.977099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2022] [Accepted: 10/12/2022] [Indexed: 11/11/2022] Open
Abstract
A 13-year-old castrated male Toy Poodle presented with an acute vestibular disorder. Magnetic resonance imaging and computed tomography revealed a large oval space-occupying mass with skull destruction located from the subcutaneous tissue to the posterior fossa region. Histopathologically, the mass was a bundled growth of spindle-shaped mesenchymal tumor cells between the myofibrillar and collagen bundles. The cells were moderately irregular in size and had eosinophilic stained cytoplasm. The cells were highly atypical and had rare mitotic figures. Neoplastic cells were immunoreactive for S100, GFAP, Olig-2, SOX10 and immunonegative for NF, E-cadherin, and Claudin-1. Collective findings were presumptive with a diagnosis of malignant peripheral nerve sheath tumor.
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Affiliation(s)
| | - Yuya Nakamoto
- Neuro Vets Animal Neurology Clinic, Kyoto, Japan
- Veterinary Medical Center, Osaka Metropolitan University, Osaka, Japan
- *Correspondence: Yuya Nakamoto
| | | | | | - Kazumi Nibe
- FUJIFUILM VET Systems Co., Ltd., Tokyo, Japan
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Ahn H, Song WJ, Choi S, Kim JH, Jung JY, Cheong J, Park H, Jeong H, Yun Y. A rare case of cecal malignant peripheral nerve sheath tumor in a dog. J Vet Med Sci 2022; 84:1051-1055. [PMID: 35732442 PMCID: PMC9412057 DOI: 10.1292/jvms.22-0042] [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: 11/22/2022] Open
Abstract
A 12-year-old mixed-breed dog presented with a 2-month history of abdominal distension. Radiographic examination, abdominal ultrasonography, and computed tomography revealed a mass in the cecum (15.0 × 11.9 × 4.5 cm). The cecal mass was surgically removed and examined histopathologically. Immunohistochemically, the neoplastic cells expressed S-100 and neuron specific enolase but not α-smooth muscle actin and CD117 (c-kit). These histologic and immunohistochemical features indicated that the mass was consistent with a malignant peripheral nerve sheath tumor (MPNST). In dogs, most MPNSTs arise from the brachial plexus, spinal nerve root, and skin of the extremities. However, gastrointestinal MPNSTs in dogs have not been described previously. To the best of our knowledge, this is the first report to describe cecal MPNST in a dog.
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Affiliation(s)
- Hyerin Ahn
- Laboratory of Veterinary Internal Medicine, College of Veterinary Medicine, Jeju National University
| | - Woo-Jin Song
- Laboratory of Veterinary Internal Medicine, College of Veterinary Medicine, Jeju National University.,Research Institute for Veterinary Medicine, College of Veterinary Medicine, Jeju National University
| | - Solji Choi
- Laboratory of Veterinary Internal Medicine, College of Veterinary Medicine, Jeju National University
| | - Jae-Hoon Kim
- Research Institute for Veterinary Medicine, College of Veterinary Medicine, Jeju National University.,Laboratory of Veterinary Pathology, College of Veterinary Medicine, Jeju National University
| | - Ji-Youl Jung
- Research Institute for Veterinary Medicine, College of Veterinary Medicine, Jeju National University.,Laboratory of Veterinary Pathology, College of Veterinary Medicine, Jeju National University
| | - Jongtae Cheong
- Research Institute for Veterinary Medicine, College of Veterinary Medicine, Jeju National University.,Laboratory of Veterinary General Surgery, College of Veterinary Medicine, Jeju National University
| | - Hyunjung Park
- Research Institute for Veterinary Medicine, College of Veterinary Medicine, Jeju National University.,Laboratory of Veterinary Imaging, College of Veterinary Medicine, Jeju National University
| | - Hyohoon Jeong
- Laboratory of Veterinary Internal Medicine, College of Veterinary Medicine, Jeju National University.,Research Institute for Veterinary Medicine, College of Veterinary Medicine, Jeju National University
| | - Youngmin Yun
- Laboratory of Veterinary Internal Medicine, College of Veterinary Medicine, Jeju National University.,Research Institute for Veterinary Medicine, College of Veterinary Medicine, Jeju National University
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Tekavec K, Švara T, Knific T, Gombač M, Cantile C. Histopathological and Immunohistochemical Evaluation of Canine Nerve Sheath Tumors and Proposal for an Updated Classification. Vet Sci 2022; 9:vetsci9050204. [PMID: 35622732 PMCID: PMC9144584 DOI: 10.3390/vetsci9050204] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Revised: 03/31/2022] [Accepted: 04/04/2022] [Indexed: 02/01/2023] Open
Abstract
Nerve sheath tumors are a group of tumors originating from Schwann cells, fibroblasts, and perineurial cells. In veterinary pathology, the terminology for nerve sheath tumors remains inconsistent, and many pathologists follow the human classification of such tumors in practice. Immunohistochemistry plays an important role in the diagnosis of nerve sheath tumors, but specific immunohistochemical and molecular biomarkers are lacking. In our study, we histopathologically reevaluated 79 canine nerve sheath tumors and assessed their reactivity for the immunohistochemical markers Sox10, claudin-1, GFAP, CNPase, and Ki-67. Based on the results, we classified the tumors according to the most recent human classification. Twelve cases were diagnosed as benign nerve sheath tumors, including six neurofibromas, three nerve sheath myxomas, two hybrid nerve sheath tumors (perineurioma/neurofibroma and perineurioma/schwannoma), and one schwannoma. Sixty-seven tumors were malignant nerve sheath tumors, including fifty-six conventional, four perineural, one epithelioid malignant nerve sheath tumor, and six malignant nerve sheath tumors with divergent differentiation. We believe that with the application of the proposed panel, an updated classification of canine nerve sheath tumors could largely follow the recent human WHO classification of tumors of the cranial and paraspinal nerves, but prospective studies would be needed to assess its prognostic value.
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Affiliation(s)
- Kristina Tekavec
- Department of Veterinary Science, University of Pisa, 56124 Pisa, Italy;
- Institute of Pathology, Wild Animals, Fish and Bees, Veterinary Faculty, University of Ljubljana, 1000 Ljubljana, Slovenia; (T.Š.); (M.G.)
- Correspondence:
| | - Tanja Švara
- Institute of Pathology, Wild Animals, Fish and Bees, Veterinary Faculty, University of Ljubljana, 1000 Ljubljana, Slovenia; (T.Š.); (M.G.)
| | - Tanja Knific
- Institute of Food Safety, Feed and Environment, Veterinary Faculty, University of Ljubljana, 1000 Ljubljana, Slovenia;
| | - Mitja Gombač
- Institute of Pathology, Wild Animals, Fish and Bees, Veterinary Faculty, University of Ljubljana, 1000 Ljubljana, Slovenia; (T.Š.); (M.G.)
| | - Carlo Cantile
- Department of Veterinary Science, University of Pisa, 56124 Pisa, Italy;
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Giraud L, Lezmi S, Gomes E, Cauzinille L. A rare case of malignant vagus nerve sheath tumor presenting with multiple cranial nerve dysfunction in a dog. THE CANADIAN VETERINARY JOURNAL = LA REVUE VETERINAIRE CANADIENNE 2020; 61:1049-1054. [PMID: 33012818 PMCID: PMC7488372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
A 5-year-old intact male Gascon Saintongeois dog was presented with a 6-month history of coughing, laryngeal paralysis, a deglutition disorder of gradual onset, and left-sided Horner's syndrome. The dog was admitted as an emergency for acute central vestibular signs. Magnetic resonance images identified a left extra-axial brainstem lesion extending caudally from the medulla to the vagosympathetic trunk. Histological and immunohistological examination revealed a high grade epithelioid malignant peripheral nerve sheath tumor (MPNST). This case report is the first description of a MPNST of the vagus nerve compressing the brainstem and causing multiple cranial nerve dysfunction in a dog. Key clinical message: Nerve sheath tumors have been reported in many locations arising from spinal nerve roots and cranial nerves. Although the trigeminal nerve is the most commonly affected nerve, other cranial nerves such as the vagus can be affected.
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Affiliation(s)
- Lucile Giraud
- CHV Frégis, 43 Av Aristide Briand, 94110 Arcueil, France
| | - Stéphane Lezmi
- CHV Frégis, 43 Av Aristide Briand, 94110 Arcueil, France
| | - Eymeric Gomes
- CHV Frégis, 43 Av Aristide Briand, 94110 Arcueil, France
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Warren AL, Miller AD, de Lahunta A, Kortz G, Summers BA. Four Cases of the Melanotic Variant of Malignant Nerve Sheath Tumour: a Rare, Aggressive Neoplasm in Young Dogs with a Predilection for the Spinal Cord. J Comp Pathol 2020; 178:1-8. [PMID: 32800101 DOI: 10.1016/j.jcpa.2020.03.010] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Revised: 03/09/2020] [Accepted: 03/28/2020] [Indexed: 10/23/2022]
Abstract
Four cases of a rare melanotic variant of malignant nerve sheath tumour (MNST) in dogs are described. All four cases presented with neurological clinical signs due to multicentric, intradural, intra- and extraparenchymal neoplasms that surrounded the spinal and cranial nerves and infiltrated the adjacent spinal cord and brain. The dogs were young (3 months to 3 years of age), all were female and four different breeds were represented. Characteristic histological features were interweaving fascicles of spindle-shaped cells, sometimes with an architecture reminiscent of Antoni A and B patterns. Some spindle cells showed prominent cytoplasmic melanin pigmentation and such cells were positive by Masson-Fontana stain. Immunohistochemistry performed in three cases was positive for S100 and vimentin, strongly positive for melan A in the melanized cells and negative for glial fibrillary acidic protein and periaxin. Non-melanized cells did not express melan A. Transmission electron microscopy findings in one case were consistent with a peripheral nerve sheath tumour and demonstrated cytoplasmic pre-melanosomes and melanosomes. Melanotic variants of MNSTs are rare in animals with only a solitary report of two previous canine cases in the literature.
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Affiliation(s)
- A L Warren
- Department of Veterinary Clinical and Diagnostic Sciences, Faculty of Veterinary Medicine, University of Calgary, Calgary, Alberta, Canada.
| | - A D Miller
- Department of Biomedical Sciences, Section of Anatomic Pathology, Cornell University College of Veterinary Medicine, Ithaca, New York, USA
| | - A de Lahunta
- Department of Biomedical Sciences, Section of Anatomic Pathology, Cornell University College of Veterinary Medicine, Ithaca, New York, USA
| | - G Kortz
- VCA Sacramento Veterinary Referral Center, Sacramento, California, USA
| | - B A Summers
- Department of Biomedical Sciences, Section of Anatomic Pathology, Cornell University College of Veterinary Medicine, Ithaca, New York, USA
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Boland L, Setyo L, Sangster C, Brunel L, Foo T, Bennett P. Colonic malignant peripheral nerve sheath tumour in a cat. JFMS Open Rep 2019; 5:2055116919849979. [PMID: 31236282 PMCID: PMC6572897 DOI: 10.1177/2055116919849979] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Case summary A 14-year-old male neutered domestic mediumhair cat presented with a 4 month
history of inappetence and weight loss. Pertinent abnormalities on
haematology and biochemistry included a mild microcytic regenerative anaemia
(packed cell volume [PCV] 24% [reference interval (RI) 30–45%], mean cell
volume 30.8 fl [RI 40–45 fl], absolute reticulocyte count 326.8 ×
1012) and increased alkaline phosphatase activity (76 IU/l;
RI <50 IU/l). Abdominal ultrasound and CT scan revealed masses in the
transverse colon (2.0 cm × 1.2 cm) and right medial liver lobe (5.0 cm
diameter). Thoracic radiographs were unremarkable. Right medial liver lobe
resection and colectomy were performed. Immunohistochemistry was positive
for S-100 protein, vimentin and glial fibrillary acidic protein, very weakly
positive for c-kit and negative for muscle-specific actin and CD18,
consistent with a colonic malignant peripheral nerve sheath tumour (MPNST)
with a hepatic metastasis. Postoperative treatment with metronomic
cyclophosphamide was well tolerated. Eighteen months postoperatively the cat
re-presented after 3 days of progressive lethargy and inappetence.
Haematology revealed a marked non- or pre-regenerative anaemia (PCV 10%).
Coagulation times were prolonged (prothrombin time 39 s [RI 15–22 s] and
activated partial thromboplastin time >300 s [RI 65–119 s]). Abdominal
ultrasound identified multiple renal and hepatic nodules. Euthanasia was
performed and post-mortem examination confirmed metastasis of the MPNST. Relevance and novel information This report describes the treatment of a metastatic colonic peripheral nerve
sheath tumour in a cat. Feline visceral MPNSTs are rare and little is known
about prognosis or optimal treatment.
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Affiliation(s)
- Lara Boland
- Valentine Charlton Cat Centre, Sydney School of Veterinary Science, Faculty of Science, University of Sydney, NSW, Australia
| | - Laura Setyo
- Veterinary Pathology Diagnostic Services, Sydney School of Veterinary Science, Faculty of Science, University of Sydney, NSW, Australia
| | - Cheryl Sangster
- Veterinary Pathology Diagnostic Services, Sydney School of Veterinary Science, Faculty of Science, University of Sydney, NSW, Australia
| | - Laurencie Brunel
- Valentine Charlton Cat Centre, Sydney School of Veterinary Science, Faculty of Science, University of Sydney, NSW, Australia
| | - Timothy Foo
- Valentine Charlton Cat Centre, Sydney School of Veterinary Science, Faculty of Science, University of Sydney, NSW, Australia
| | - Peter Bennett
- Valentine Charlton Cat Centre, Sydney School of Veterinary Science, Faculty of Science, University of Sydney, NSW, Australia
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