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May JL, Garcia-Mora J, Edwards M, Rossmeisl JH. An Illustrated Scoping Review of the Magnetic Resonance Imaging Characteristics of Canine and Feline Brain Tumors. Animals (Basel) 2024; 14:1044. [PMID: 38612283 PMCID: PMC11010916 DOI: 10.3390/ani14071044] [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: 02/23/2024] [Revised: 03/25/2024] [Accepted: 03/27/2024] [Indexed: 04/14/2024] Open
Abstract
Magnetic resonance imaging (MRI) is used pervasively in veterinary practice for the antemortem diagnosis of intracranial tumors. Here, we provide an illustrated summary of the published MRI features of primary and secondary intracranial tumors of dogs and cats, following PRISMA scoping review guidelines. The PubMed and Web of Science databases were searched for relevant records, and input from stakeholders was solicited to select data for extraction. Sixty-seven studies of moderate to low-level evidence quality describing the MRI features of pathologically confirmed canine and feline brain tumors met inclusion criteria. Considerable variability in data inclusion and reporting, as well as low case numbers, prohibited comparative data analyses. Available data support a holistic MRI approach incorporating lesion number, location within the brain, shape, intrinsic signal appearances on multiparametric sequences, patterns of contrast enhancement, and associated secondary changes in the brain to prioritize differential imaging diagnoses, and often allows for accurate presumptive diagnosis of common intracranial tumors. Quantitative MRI techniques show promise for improving discrimination of neoplastic from non-neoplastic brain lesions, as well as differentiating brain tumor types and grades, but sample size limitations will likely remain a significant practical obstacle to the design of robustly powered radiomic studies. For many brain tumor variants, particularly in cats, there remains a need for standardized studies that correlate clinicopathologic and neuroimaging data.
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Affiliation(s)
- James L. May
- Veterinary and Comparative Neuro-Oncology Laboratory, Department of Small Animal Clinical Sciences, Virginia-Maryland College of Veterinary Medicine, Virginia Tech, Blacksburg, VA 24061, USA; (J.L.M.); (J.G.-M.)
| | - Josefa Garcia-Mora
- Veterinary and Comparative Neuro-Oncology Laboratory, Department of Small Animal Clinical Sciences, Virginia-Maryland College of Veterinary Medicine, Virginia Tech, Blacksburg, VA 24061, USA; (J.L.M.); (J.G.-M.)
| | - Michael Edwards
- Department of Small Animal Clinical Sciences, Virginia-Maryland College of Veterinary Medicine, Virginia Tech, Blacksburg, VA 24061, USA;
| | - John H. Rossmeisl
- Veterinary and Comparative Neuro-Oncology Laboratory, Department of Small Animal Clinical Sciences, Virginia-Maryland College of Veterinary Medicine, Virginia Tech, Blacksburg, VA 24061, USA; (J.L.M.); (J.G.-M.)
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2
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Porsmoguer C, Blondel M, Moissonnier PHM. Surgical treatment of feline intracranial meningiomas: a retrospective study of 26 cases. J Vet Sci 2024; 25:e25. [PMID: 38568826 PMCID: PMC10990911 DOI: 10.4142/jvs.23207] [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: 09/12/2023] [Revised: 12/27/2023] [Accepted: 01/04/2024] [Indexed: 04/05/2024] Open
Abstract
BACKGROUND Surgical excision is the treatment of choice for feline intracranial meningioma. OBJECTIVES To report clinical findings, complications, and outcomes following surgery for feline intracranial meningioma. METHODS Medical records (01/2000-01/2017) of cats that underwent surgical excision of an intracranial meningioma at our institution were reviewed. Patient data included signalment, clinical signs, surgical technique, complications, histopathologic diagnosis, survival time, and owners' answers to a satisfaction questionnaire. Survival was assessed using the Kaplan-Meier method and log-rank test. RESULTS Twenty-six cats were included in this study. The exact cause of death was known in 17 cases and was not related to meningioma in 9/17 cases. Overall median survival time was 881 days (95% confidence interval 518; 1248). The age of the cat did not influence survival (p = 0.94) or the occurrence of complications (p = 0.051). Complications occurred in 13/24 cats, including dramatic complications in 4/24 cats. Most complications appeared in the first 24 hours post-surgery (12/13). Males had more postoperative complications (p = 0.042), including more seizures (p = 0.016). Cats with cranioplasty had fewer complications (p = 0.021). Clinical recurrence was confirmed in 3 out of 17 cats. Recurrence-free survival time was 826 days. Most owners (12/14) were satisfied with the outcome. CONCLUSIONS Surgical treatment of intracranial meningioma in cats was associated with a long median survival time but also with a high rate of minor and major postoperative complications, including early postoperative seizures. Cranioplasty may reduce complications. Age at the time of surgery had no effect on outcomes.
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Affiliation(s)
- Charles Porsmoguer
- Small Animal Surgery Department, VetAgroSup Veterinary Campus, 69280 Marcy l'Etoile, France
- Université de Lyon, VetAgro Sup, UPSP 2016 A104, Unité ICE, 69280 Marcy l'Etoile, France.
| | - Margaux Blondel
- Small Animal Surgery Department, VetAgroSup Veterinary Campus, 69280 Marcy l'Etoile, France
- Université de Lyon, VetAgro Sup, UPSP 2016 A104, Unité ICE, 69280 Marcy l'Etoile, France
| | - Pierre H M Moissonnier
- Small Animal Surgery Department, VetAgroSup Veterinary Campus, 69280 Marcy l'Etoile, France
- Université de Lyon, VetAgro Sup, UPSP 2016 A104, Unité ICE, 69280 Marcy l'Etoile, France
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3
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Rissi DR, Miller AD, Demeter EA, Church ME, Koehler JW. Diagnostic immunohistochemistry of primary and secondary central nervous system neoplasms of dogs and cats. J Vet Diagn Invest 2024; 36:153-168. [PMID: 38234003 DOI: 10.1177/10406387231221858] [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] [Indexed: 01/19/2024] Open
Abstract
The diagnosis of primary and secondary CNS neoplasms of dogs and cats relies on histologic examination of autopsy or biopsy samples. In addition, many neoplasms must be further characterized by immunohistochemistry (IHC) for a more refined diagnosis in specific cases. Given the many investigations assessing the diagnostic and prognostic IHC profile of CNS neoplasms in the veterinary literature, it may be difficult for the diagnostic pathologist or pathology trainee to narrow the list of reliable diagnostic IHCs when facing a challenging case. Here we compile a comprehensive list of the most diagnostically relevant immunomarkers that should be utilized for the diagnostic support or confirmation of the most common primary and secondary CNS neoplasms of dogs and cats.
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Affiliation(s)
- Daniel R Rissi
- Athens Veterinary Diagnostic Laboratory, Department of Pathology, College of Veterinary Medicine, University of Georgia, Athens, GA, USA
| | - Andrew D Miller
- Department of Population Medicine and Diagnostic Sciences, Section of Anatomic Pathology, College of Veterinary Medicine, Cornell University, Ithaca, NY, USA
| | - Elena A Demeter
- Department of Population Medicine and Diagnostic Sciences, Section of Anatomic Pathology, College of Veterinary Medicine, Cornell University, Ithaca, NY, USA
| | - Molly E Church
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Jennifer W Koehler
- Department of Pathobiology, College of Veterinary Medicine, Auburn University, Auburn, AL, USA
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4
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Köcher C, Tichy A, Gradner G. Evaluation of the health-related quality of life in dogs following intracranial meningioma resection using a specifically developed questionnaire. Vet Comp Oncol 2024; 22:89-95. [PMID: 38151994 DOI: 10.1111/vco.12956] [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: 07/31/2023] [Revised: 10/27/2023] [Accepted: 12/12/2023] [Indexed: 12/29/2023]
Abstract
As advanced treatments are becoming increasingly feasible in veterinary medicine, the evaluation of the health-related quality of life (HRQOL) of treated animals is becoming more relevant. We evaluated owner-perceived HRQOL of 10 dogs that underwent craniotomy for meningioma resection between 2002 and 2022 at our institution through telephone interview. For this purpose, we developed a disease-specific questionnaire containing 52 items (mostly of scoring nature) patterned after previously validated instruments and organised into eight domains. Approval by the Human Ethical Committee and respondents' consent were obtained. We analysed the scores for all domains and dogs. The effect of different variables on the HRQOL score was determined via log-rank test and Pearson correlation. Scores for all included dogs (range, 0-235 points) were totaled, with a higher number of points indicating a better HRQOL. The dogs included in this study yielded a mean score of 200.6 points (range, 176-227 points), implying a good overall quality of life. There were no significant associations between individual parameters and outcomes. Our questionnaire represents a structured tool for the specific evaluation of postoperative HRQOL in dogs with meningioma, placing a minimal burden on respondents. Few instruments have been developed to assess animal welfare in a disease-specific context. Implementing these tools, however, is essential to accurately evaluate not only the impact of treatments on biologic parameters, but also their implications on patient welfare. Thus, treatment plans may consider HRQOL for a more comprehensive clinical decision-making process.
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Affiliation(s)
- Chiara Köcher
- University Clinic for Small Animals, Small Animal Surgery, University of Veterinary Medicine Vienna, Vienna, Austria
| | - Alexander Tichy
- Platform for Bioinformatics and Biostatistics, University of Veterinary Medicine Vienna, Vienna, Austria
| | - Gabriele Gradner
- University Clinic for Small Animals, Small Animal Surgery, University of Veterinary Medicine Vienna, Vienna, Austria
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5
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Tomanelli M, Florio T, Vargas GC, Pagano A, Modesto P. Domestic Animal Models of Central Nervous System Tumors: Focus on Meningiomas. Life (Basel) 2023; 13:2284. [PMID: 38137885 PMCID: PMC10744527 DOI: 10.3390/life13122284] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Accepted: 11/09/2023] [Indexed: 12/24/2023] Open
Abstract
Intracranial primary tumors (IPTs) are aggressive forms of malignancies that cause high mortality in both humans and domestic animals. Meningiomas are frequent adult IPTs in humans, dogs, and cats, and both benign and malignant forms cause a decrease in life quality and survival. Surgery is the primary therapeutic approach to treat meningiomas, but, in many cases, it is not resolutive. The chemotherapy and targeted therapy used to treat meningiomas also display low efficacy and many side effects. Therefore, it is essential to find novel pharmacological approaches to increase the spectrum of therapeutic options for meningiomas. This review analyzes the similarities between human and domestic animal (dogs and cats) meningiomas by evaluating the molecular and histological characteristics, diagnosis criteria, and treatment options and highlighting possible research areas to identify novel targets and pharmacological approaches, which are useful for the diagnosis and therapy of this neoplasia to be used in human and veterinary medicine.
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Affiliation(s)
- Michele Tomanelli
- Department of Experimental Medicine, University of Genova, 16132 Genova, Italy; (G.C.V.); (A.P.)
| | - Tullio Florio
- Pharmacology Section, Department of Internal Medicine (DIMI), University of Genova, 16126 Genova, Italy;
- IRCCS Ospedale Policlinico San Martino, 16132 Genova, Italy
| | - Gabriela Coronel Vargas
- Department of Experimental Medicine, University of Genova, 16132 Genova, Italy; (G.C.V.); (A.P.)
| | - Aldo Pagano
- Department of Experimental Medicine, University of Genova, 16132 Genova, Italy; (G.C.V.); (A.P.)
- IRCCS Ospedale Policlinico San Martino, 16132 Genova, Italy
| | - Paola Modesto
- National Reference Center for Veterinary and Comparative Oncology, Veterinary Medical Research Institute for Piemonte, Liguria and Valle d’Aosta, 10154 Torino, Italy
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Sidhu A, DeJesus AA. Computed tomographic, magnetic resonance imaging, and ultrasonographic characteristics of retrobulbar meningiomas in 15 dogs. Vet Radiol Ultrasound 2023; 64:1044-1054. [PMID: 38009278 DOI: 10.1111/vru.13311] [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: 04/19/2023] [Revised: 09/26/2023] [Accepted: 09/27/2023] [Indexed: 11/28/2023] Open
Abstract
Meningioma is the most common tumor of the cranium in dogs and an important differential diagnosis for a potentially treatable disease that can be found in the periorbital tissues. The objective of this retrospective, case series study was to describe the CT, MRI, and US characteristics of confirmed retrobulbar meningiomas in a group of dogs. Medical records from multiple institutions were searched for canine patients with CT, MRI, and/or US imaging of a cytologically or histologically confirmed retrobulbar meningioma. Fifteen dogs met the inclusion criteria. Retrobulbar meningiomas typically appeared as a relatively well-defined conical to ovoid mass within the retrobulbar space, most often along the optic nerve and expanding the extraocular muscle cone. On CT, masses were predominantly soft tissue attenuating and variably heterogeneously contrast enhancing. While MRI features were variable, moderate to marked contrast enhancement was seen in all cases. Many of the tumors had evidence of partial mineralization, best appreciated on CT in nine patients, but also suspected based on susceptibility artifacts in three MRI cases, one of which was confirmed on CT. Regional osteolysis was a rare finding, noted in three cases, but was often accompanied by cranial cavity extension (2/3). Cranial cavity extension was also seen in the absence of regional osteolysis, identified in a total of six patients. On US, masses were echogenic and compressed the globe. The findings were consistent with previous gross and histologic descriptions and supported prioritizing retrobulbar meningioma as a differential diagnosis for dogs with the described imaging characteristics.
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Affiliation(s)
- Amit Sidhu
- Department of Diagnostic Imaging, The Animal Medical Center, New York, New York, USA
| | - Antonia A DeJesus
- Department of Diagnostic Imaging, The Animal Medical Center, New York, New York, USA
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SAITO R, CHAMBERS JK, UCHIDA K. The expression of platelet-derived growth factor and its receptor in canine and feline meningiomas. J Vet Med Sci 2023; 85:1057-1062. [PMID: 37558425 PMCID: PMC10600539 DOI: 10.1292/jvms.23-0300] [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: 07/10/2023] [Accepted: 07/31/2023] [Indexed: 08/11/2023] Open
Abstract
Feline meningiomas usually have benign biological behavior, while canine and human meningiomas are often classified as grade 2 or 3. Activation of the platelet-derived growth factor (PDGF) and its receptor signal pathway through PDGFβ/Rβ autocrine and paracrine is considered to play an important role in the tumor proliferation and malignant transformation of human meningiomas. However, there have been few studies about the expression of these molecules in canine meningiomas and no studies about their expression in feline meningiomas. We analyzed the PDGFα/Rα and PDGFβ/Rβ expression in canine and feline meningiomas by immunohistochemistry and western blotting. Immunohistochemically, most canine meningiomas showed the expression of PDGFα (42/44; 95.5%), PDGFRα (44/44; 100%) and PDGFRβ (35/44; 79.5%), and a few showed the expression of PDGFβ (8/44; 18.2%). In contrast, feline meningiomas were immunopositive for PDGFRα and PDGFRβ in all cases (14/14; 100%), while no or a few cases expressed PDGFα (0/14; 0%) and PDGFβ (2/14; 14.3%). Western blotting revealed specific bands for PDGFα, PDGFRα and PDGFRβ, but not for PDGFβ in a canine meningioma. In a feline meningioma, specific bands for PDGFRα and PDGFRβ were detected, but not for PDGFα and PDGFβ. These results suggested that canine meningiomas commonly express PDGFα/Rα, and thus autocrine or paracrine PDGFα/Rα signaling may be involved in their initiation and progression. Moreover, PDGF negativity may be related to benign biological behavior and a low histopathological grade in feline meningioma.
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Affiliation(s)
- Ryo SAITO
- Laboratory of Veterinary Pathology, Graduate School of
Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - James K CHAMBERS
- Laboratory of Veterinary Pathology, Graduate School of
Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Kazuyuki UCHIDA
- Laboratory of Veterinary Pathology, Graduate School of
Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
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8
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Koch L, Tichy A, Gradner G. Outcome and quality of life after intracranial meningioma surgery in cats. J Feline Med Surg 2023; 25:1098612X231194425. [PMID: 37870933 PMCID: PMC10812019 DOI: 10.1177/1098612x231194425] [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] [Indexed: 10/25/2023]
Abstract
OBJECTIVES The present study aimed to evaluate the postoperative quality of life (QOL) after surgery for the treatment of intracranial meningioma in cats. METHODS The study included 14 cases that underwent craniotomy from May 2009 to March 2021. Owners were contacted via telephone after a median time of 967 (range 227-4209) days after surgery and surveyed with a specially designed questionnaire that consisted of three domains, subdivided into different items. Physical behaviour, including general condition, food intake, mobility and overall impression, was evaluated from 0, reflecting the worst status, to 10, reflecting the best. The development of preoperative existing clinical signs, seizures and concurrent medication were evaluated individually for each patient. The time span necessary for the improvement of each item was recorded. Finally, satisfaction about the decision for surgery was ranked from 0 to 10. RESULTS Thirteen questionnaires were completed. Three cats were evaluated twice owing to revision surgery. Owners reported a statistically significant (P <0.001) improvement from immediately after the operation to 240 days after surgery. Preoperative clinical signs resolved in 95% of cases. All questioned owners would opt for surgery again. CONCLUSIONS AND RELEVANCE QOL after surgery for intracranial meningioma in cats seems encouraging regarding our study. Nevertheless, limitations, such as small sample size, recall bias, lack of a control group and validation of the questionnaire, need to be kept in mind when interpreting the results.
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Affiliation(s)
- Lydia Koch
- Department for Small Animals and Horses, Small Animal Surgery, University of Veterinary Medicine Vienna, Vienna, Austria
| | - Alexander Tichy
- Bioinformatics and Biostatistics Platform, Department of Biomedical Sciences, University of Veterinary Medicine Vienna, Vienna, Austria
| | - Gabriele Gradner
- Department for Small Animals and Horses, Small Animal Surgery, University of Veterinary Medicine Vienna, Vienna, Austria
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9
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Majors K, Rocha SM, Windsor R, Tjalkens RB, Engelien J, Aboellail T. A novel meningioma with tyrosine-rich crystals in a 6-year-old Great Dane. J Vet Intern Med 2023; 37:1501-1506. [PMID: 37312432 PMCID: PMC10365060 DOI: 10.1111/jvim.16789] [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: 03/14/2023] [Accepted: 05/27/2023] [Indexed: 06/15/2023] Open
Abstract
A 6-year-old female spayed Great Dane was evaluated for acute onset cluster seizures. Magnetic resonance imaging (MRI) identified a mass in the olfactory bulbs with a large mucoid component caudal to the primary mass. The mass was removed via transfrontal craniotomy and histopathology revealed a tyrosine crystalline-rich, fibrous meningioma with a high mitotic index. Repeat MRI at 6 months showed no detectable tumor regrowth. The dog is clinically normal with no seizures at the time of publication 10 months after surgery. This meningioma subtype is rare in humans. This unique meningioma occurred in a dog of younger age and uncommon breed for intracranial meningioma. Biological progression of this tumor subtype is unknown; however, growth rate might be slow despite the high mitotic index.
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Affiliation(s)
- Kara Majors
- Wheat Ridge Animal HospitalWheat RidgeColoradoUSA
| | - Savannah M. Rocha
- Department of Environmental and Radiological Health SciencesColorado State UniversityFort CollinsColoradoUSA
| | | | - Ronald B. Tjalkens
- Department of Environmental and Radiological Health SciencesColorado State UniversityFort CollinsColoradoUSA
| | | | - Tawfik Aboellail
- Department of Microbiology, Immunology, and PathologyColorado State UniversityFort CollinsColoradoUSA
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10
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Byun P, Roh Y, Lee H, Jeong J. Use of Computed Tomography and Magnetic Resonance Angiograms Combined with a 3D Surgical Guide in an Elderly Cat with an Occipital Lobe Meningioma. Vet Sci 2023; 10:vetsci10040264. [PMID: 37104418 PMCID: PMC10146195 DOI: 10.3390/vetsci10040264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 03/18/2023] [Accepted: 03/28/2023] [Indexed: 03/31/2023] Open
Abstract
We present a case of occipital lobe meningioma resection in an elderly cat. The surgery was performed with the goal of avoiding major bleeding. An 11-year-old castrated indoor-only male Persian Chinchilla (5.5 kg) was presented with a month-long history of progressive tetraparesis for a left occipital lobe meningioma. Magnetic resonance imaging revealed a T2-weighted heterogeneously hyperintensity and a T1-weighted well-contrast enhancing extradural mass in the left occipital lobe of the brain. Cerebral angiographic data were obtained using magnetic resonance (MRA) and computed tomography angiography (CTA). Advanced angiograms and virtual reconstruction of images revealed that the tumor was surrounded by the caudal parasagittal meningeal vein. A left caudal rostrotentorial craniotomy and en bloc resection of the tumor were performed, and histopathology revealed a meningioma. Complete neurological recovery was achieved within 10 days after surgery. To the best of our knowledge, this is the first case report describing CTA and MRA findings and favorable clinical outcomes after surgical management of a brain meningioma without severe perioperative complications.
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Affiliation(s)
- Pillmoo Byun
- College of Veterinary Medicine, Chungnam National University, Daejeon 34134, Republic of Korea
| | - Yoonho Roh
- Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University, Jinju 52828, Republic of Korea
| | - Haebeom Lee
- College of Veterinary Medicine, Chungnam National University, Daejeon 34134, Republic of Korea
| | - Jaemin Jeong
- College of Veterinary Medicine, Chungnam National University, Daejeon 34134, Republic of Korea
- Correspondence:
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11
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Rissi DR. A review of primary central nervous system neoplasms of cats. Vet Pathol 2023; 60:294-307. [PMID: 36803009 DOI: 10.1177/03009858231155400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
Abstract
Primary central nervous system (CNS) neoplasms are uncommonly diagnosed in cats. The majority of primary feline CNS neoplasms described in the veterinary literature consist of meningioma and glioma occurring mainly in the brain and less often in the spinal cord. Although most neoplasms can be diagnosed based on routine histologic evaluation, less typical tumors need to be further characterized using immunohistochemistry. This review compiles the relevant information about the most common primary CNS neoplasms of cats available in the veterinary literature, aiming to serve as a converging source of information for the topic.
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12
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Gould A, Naskou MC, Brinker E. What is your diagnosis? Impression smear from a dog with an intracranial mass. Vet Clin Pathol 2023; 52 Suppl 2:122-126. [PMID: 36740238 DOI: 10.1111/vcp.13196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Revised: 08/22/2022] [Accepted: 09/11/2022] [Indexed: 02/07/2023]
Affiliation(s)
- Aubrey Gould
- Department of Pathobiology, College of Veterinary Medicine, Auburn University, Auburn, Alabama, USA
| | - Maria C Naskou
- Department of Pathobiology, College of Veterinary Medicine, Auburn University, Auburn, Alabama, USA.,Scott Ritchey Research Center, College of Veterinary Medicine, Auburn University, Auburn, Alabama, USA
| | - Emily Brinker
- Department of Pathobiology, College of Veterinary Medicine, Auburn University, Auburn, Alabama, USA
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13
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Schuwerk L, Lemke L, Hünerfauth E, Hewicker-Trautwein M. Atypically located arachnoid cyst in a five-year-old cat. J Comp Pathol 2023; 200:46-50. [PMID: 36641986 DOI: 10.1016/j.jcpa.2022.12.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Revised: 10/04/2022] [Accepted: 11/18/2022] [Indexed: 01/15/2023]
Abstract
Arachnoid cysts are cystic lesions that occur in spinal or intracranial locations in the leptomeningeal space. Four intracranial cases have been described in cats, three of which were diagnosed by imaging techniques alone. We now report the clinical, gross and histopathological findings in a 5-year-old, male-neutered European Shorthair cat that presented with chronic, asymmetrical encephalopathy. Using magnetic resonance imaging, a focal, fluid-filled cavity that did not show contrast enhancement was identified in the left temporal and piriform lobes. Necropsy confirmed the presence of a cystic, meningeal cavity filled with clear, serous fluid. Histologically, the cyst had an irregular, hypereosinophilic surface and single psammoma bodies with moderate perivascular oedema in the adjacent neuroparenchyma. Immunohistochemical evidence of meningeal tissue surrounding the cyst confirmed the diagnosis of an arachnoid cyst, which should be considered as a differential diagnosis of intracranial, fluid-filled cavities.
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Affiliation(s)
- Lukas Schuwerk
- Department of Pathology, University of Veterinary Medicine Hannover, Hannover, Germany.
| | - Laura Lemke
- Department for Small Animal Medicine and Surgery, University of Veterinary Medicine Hannover, Hannover, Germany
| | - Enrice Hünerfauth
- Department for Small Animal Medicine and Surgery, University of Veterinary Medicine Hannover, Hannover, Germany
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14
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Riker J, Clarke LL, Demeter EA, Miller AD, Howerth EW, Miller DM, Rissi DR. Histiocytic sarcoma with central nervous system involvement in 6 cats. J Vet Diagn Invest 2023; 35:87-91. [PMID: 36366728 PMCID: PMC9751457 DOI: 10.1177/10406387221136849] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Here we characterize 6 cases (4 autopsies and 2 biopsies) of histiocytic sarcoma in the CNS of cats. All affected cats had chronic, progressive clinical signs. Three autopsied cats were euthanized because of a poor prognosis, and one died. The clinical outcome for the biopsy cases remains unknown. Tumors occurred in the brain (4 cases), spinal cord (1 case), and brain and spinal cord (1 case). Neoplasms were restricted to the CNS in 3 cases. Reported gross changes in the 4 autopsy cases consisted of neuroparenchymal swelling with or without tissue pallor or gray discoloration (2 cases) and a yellow or dark-gray mass (2 cases). Histologically, pleomorphic, round-to-elongate neoplastic cells with typical histiocytic morphology effaced the neuroparenchyma and leptomeninges. Multinucleate neoplastic cells were observed in all cases. The mitotic count was 1-24 in 2.37 mm2 (10 FN22 40× fields). Neoplastic cells in all cases had positive immunolabeling for Iba1; immunolabeling was negative for E-cadherin, CD3, CD79, and MUM1, confirming their histiocytic origin.
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Affiliation(s)
- Jesse Riker
- Department of Pathology, College of Veterinary Medicine, University of Georgia, Athens, GA, USA
| | - Lorelei L. Clarke
- Wisconsin Veterinary Diagnostic Laboratory, University of Wisconsin, Madison, WI, USA
| | - Elena A. Demeter
- Department of Biomedical Sciences, Section of Anatomic Pathology, College of Veterinary Medicine, Cornell University, Ithaca, NY, USA
| | - Andrew D. Miller
- Department of Biomedical Sciences, Section of Anatomic Pathology, College of Veterinary Medicine, Cornell University, Ithaca, NY, USA
| | - Elizabeth W. Howerth
- Department of Pathology, College of Veterinary Medicine, University of Georgia, Athens, GA, USA
| | - Doris M. Miller
- Athens Veterinary Diagnostic Laboratory, College of Veterinary Medicine, University of Georgia, Athens, GA, USA
| | - Daniel R. Rissi
- Department of Pathology, College of Veterinary Medicine, University of Georgia, Athens, GA, USA
- Athens Veterinary Diagnostic Laboratory, College of Veterinary Medicine, University of Georgia, Athens, GA, USA
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15
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Greco A, Meomartino L, Gnudi G, Brunetti A, Di Giancamillo M. Imaging techniques in veterinary medicine . Part II: Computed tomography, magnetic resonance imaging, nuclear medicine. Eur J Radiol Open 2022; 10:100467. [PMID: 36570419 PMCID: PMC9768321 DOI: 10.1016/j.ejro.2022.100467] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Accepted: 12/07/2022] [Indexed: 12/15/2022] Open
Abstract
Radiography and ultrasonography are the most used techniques in veterinary clinical practice, due to organizational, managerial and, mostly, economic reasons. However, in the last decades, Computed tomography (CT), Magnetic Resonance Imaging (MRI) and, to a lesser extent, Nuclear Medicine (MN) are increasingly used. As we said in the previous article, all the Diagnostic Imaging techniques are actually "indispensable" in Veterinary Medicine, where many patients do not show any symptoms.This second part describes Computed Tomography (CT), Magnetic Resonance (MRI) and Nuclear Medicine techniques in Veterinary Medicine are described.
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Affiliation(s)
- Adelaide Greco
- Centro Interdipartimentale di Radiologia Veterinaria, Università degli Studi di Napoli “Federico II”, Via F. Delpino, 1, 80137 Napoli, Italy
| | - Leonardo Meomartino
- Centro Interdipartimentale di Radiologia Veterinaria, Università degli Studi di Napoli “Federico II”, Via F. Delpino, 1, 80137 Napoli, Italy,Corresponding author.
| | - Giacomo Gnudi
- Dipartimento di Scienze Mediche Veterinarie, Università di Parma, Via del Taglio, 10, 43126 Parma, Italy
| | - Arturo Brunetti
- Dipartimento di Scienze Biomediche Avanzate, Università degli Studi di Napoli “Federico II”, Via Pansini, 5, 80131 Napoli, Italy
| | - Mauro Di Giancamillo
- Dipartimento di Medicina Veterinaria, Università degli Studi di Milano, Via Festa del Perdono, 7, 20122 Milano, Italy
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16
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So J, Lee H, Jeong J, Forterre F, Roh Y. Endoscopy-assisted resection of a sphenoid-wing meningioma using a 3D-printed patient-specific pointer in a dog: A case report. Front Vet Sci 2022; 9:979290. [DOI: 10.3389/fvets.2022.979290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Accepted: 11/02/2022] [Indexed: 11/17/2022] Open
Abstract
A 9-year-old female mixed-breed dog presented for treatment of a presumed sphenoid-wing meningioma. Clinical signs included tonic-clonic seizures lasting <1 min, which had started 3 months previously. The physical examination results were unremarkable. An eccentrically located neoplastic cystic structure in the right sphenoid bone region suggestive of a meningioma and peritumoural brain oedema was observed in pre-operative magnetic resonance imaging (MRI). Prior to surgery, a three-dimensional (3D) patient-specific pointer (PSP) was designed using computed tomography (CT) images and computer-aided 3D design software. After a targeted approach and exposure of the lateral part of the right temporal lobe by a craniectomy guided by the 3D-PSP, complete macroscopic piecemeal resection of the meningioma could be performed using endoscopy-assisted brain surgery. Post-operative MRI confirmed complete excision of the tumor. Anticonvulsive therapy was discontinued after 90 days, and the dosage of anticonvulsants was tapered 2 weeks after surgery. At a follow-up examination 225 days post-operatively, recurrence of seizures was not observed, and the absence of tumor recurrence was confirmed by a repeat MRI examination. To the best of our knowledge, this is the first report in veterinary medicine describing a successful resection of a sphenoid-wing meningioma using a 3D-PSP. 3D-PSP-assisted craniectomy may be a surgical option for some canine skull-based tumors, such as sphenoid wing meningiomas.
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Song K, Lee H, Jeong J, Roh Y. Multiple Meningioma Resection by Bilateral Extended Rostrotentorial Craniotomy with a 3D-Print Guide in a Cat. Vet Sci 2022; 9:vetsci9100512. [PMID: 36288124 PMCID: PMC9609023 DOI: 10.3390/vetsci9100512] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 09/05/2022] [Accepted: 09/15/2022] [Indexed: 12/04/2022] Open
Abstract
Simple Summary Meningioma is the most common intracranial neoplasia in cats. Treatments for meningiomas—including complete surgical resection, debulking, irradiation, or palliative therapy—have been reported in veterinary medicine. However, multiple meningiomas (two or more meningiomas in the same patient, separated by anatomical location) have been reported to affect the complication rate and prognosis. Moreover, the characteristics of neurosurgery—such as accurate localization and awareness of the anatomical structures of the lesions—make the surgery especially difficult for inexperienced surgeons. Surgical navigation systems have been developed, but recently, patient-specific three-dimensional(3D)-printed models and guides have also been used in orthopedics and neurosurgeries for treating many disorders with good results. A 13-year-old castrated male domestic shorthair cat was referred with multiple meningiomas located within the right frontal and occipital lobes. The cat suffered from generalized tonic–clonic seizures and mild proprioceptive ataxia. After removing both of the tumors, the cat showed a favorable clinical outcome and no neurological abnormalities throughout long-term follow-up. With a patient-specific 3D guide technology, a craniotomy for multiple meningiomas can be performed safely and accurately. Abstract A 13-year-old castrated male domestic shorthair cat was referred for the surgical removal of multiple meningiomas. The cat experienced generalized tonic–clonic seizures, altered mentation, mild proprioceptive ataxia, and circling. Magnetic resonance imaging (MRI) revealed two round, solitary, well-delineated, space-occupying lesions suggestive of multiple meningiomas in the right frontal and occipital lobes. Before surgery, patient-specific three-dimensional (3D) printed models and guides were produced using a 3D program based on MRI and computed tomography (CT), and a rehearsal surgery was performed. With a 3D guide to find the location of the craniotomy lines, bilateral extended rostrotentorial craniotomy allowed en bloc resection of multiple meningiomas. The bone fragment was replaced and secured to the skull with a craniofacial plate and screws with an artificial dura. All of the surgical steps were performed without complications. The preoperative presenting signs were resolved by the time of follow-up examinations 2 weeks after surgery. Twelve months after the removal of the multiple meningiomas, the cat survived without further neurological progression. For the resection of multiple meningiomas, surgery can result in large bone defects and risk of massive hemorrhage. For this challenging surgery, patient-specific 3D models and guides can be effective for accurate and safe craniotomies.
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Affiliation(s)
- Kyohyuk Song
- Department of Veterinary Surgery, College of Veterinary Medicine, Chungnam National University, Daejeon 34134, Korea
| | - Haebeom Lee
- Department of Veterinary Surgery, College of Veterinary Medicine, Chungnam National University, Daejeon 34134, Korea
| | - Jaemin Jeong
- Department of Veterinary Surgery, College of Veterinary Medicine, Chungnam National University, Daejeon 34134, Korea
| | - Yoonho Roh
- Division of Small Animal Surgery, Department of Clinical Veterinary Medicine, Vetsuisse-Faculty University of Bern, 63012 Bern, Switzerland
- Correspondence:
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18
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Sinonasal Meningioma in a Siberian Tiger (Panthera tigris altaica). Vet Sci 2022; 9:vetsci9090457. [PMID: 36136673 PMCID: PMC9504017 DOI: 10.3390/vetsci9090457] [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: 07/25/2022] [Revised: 08/12/2022] [Accepted: 08/23/2022] [Indexed: 11/16/2022] Open
Abstract
Simple Summary Meningiomas are the most common primary brain tumour in dogs and cats. However, whilst there are numerous reports of meningiomas at extracranial sites in the dog (such as the spine, the eye and near the nasal cavity), in cats there have only been a few case reports of meningiomas arising in the spine, and no reports of post-mortem confirmed meningiomas arising in the eyes or near the nasal cavity. In this report, a 20-year-old captive tiger (Panthera tigris altaica) with a history of chronic eye inflammation, resulting in eventual removal of the eye, spontaneously developed epilepsy. Over the course of 2 years, the seizures worsened to the point where the animal was eventually euthanized. At autopsy, a mass was found near the nasal cavity and histological analysis showed tumour cells surrounded by a collagenous matrix. The diagnosis was sinonasal transitional meningioma. This is the first report of a captive wild felid with an extracranial meningioma, specifically a tiger with a sinonasal transitional meningioma. Abstract Meningiomas are the most common primary brain tumour in dogs and cats. However, whilst there are numerous reports of extracranial (spinal, orbital and sinonasal) meningiomas in the dog, there have only been a few case reports of spinal meningiomas, and no post-mortem confirmed orbital or sinonasal meningiomas in cats. In this report, a 20-year-old captive tiger (Panthera tigris altaica) with a history of chronic ocular inflammation resulting in enucleation, spontaneously developed tetanic convulsions (epileptic seizures) that over a 2-year period resulted in a gradually worsening condition and the animal was eventually euthanized. At autopsy, a focal, expansile, neoplastic mass was found in the caudal nasal cavity midline, abutting the cribriform plate and slightly compressing the calvarium. Histological analysis revealed nasal turbinates attached to a well-circumscribed expansile multi-lobular mass consisting of interlacing whorls and streams of neoplastic cells supported by a variably fibrous to microcystic collagenous matrix displaying rare psammoma bodies. The diagnosis was sinonasal transitional meningioma. This is the first report of a captive wild felid with an extracranial meningioma, specifically a tiger with a sinonasal transitional meningioma.
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19
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Dussaux A, Gomes E, Hurion M, Rattez E, Mayousse V. Cerebral meningioma associated with extensive calvarium osteolysis and presumed intratumoral carcinoma metastasis in a cat. JFMS Open Rep 2022; 8:20551169221122849. [PMID: 36132420 PMCID: PMC9484047 DOI: 10.1177/20551169221122849] [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] [Indexed: 11/29/2022] Open
Abstract
Case summary A 10-year-old male neutered domestic shorthair cat presented with a 3-month
history of weight loss, dysorexia and lethargy. Neurological examination
revealed decreased mentation, absent menace response bilaterally and
proprioceptive deficits affecting all four limbs; these findings were
consistent with a forebrain disorder. Brain CT revealed an extensive
asymmetric permeative osteolysis destroying two-thirds of the circumference
of the calvarium and involving the right frontal, parietal, temporal and
occipital bones, as well as the left parietal bone. This extensive bone
lysis was associated with a large ‘plaque-like’ extra-axial
subdural/pachymeningeal lesion extending within the soft tissues surrounding
the calvarium. The cat was humanely euthanased. Post-mortem MRI was
performed, which revealed a T2-weighted (T2W) hypointense subdural lesion
and a T2W hyperintense circumferential extracranial lesion lining the right
calvarium and left parietal bone. Histopathological analysis on a
post-mortem sample of the lesion revealed a fibroblastic subtype of
meningioma. Epithelial neoplastic cells were observed scattered through the
meningioma, calvarium and surrounding muscular tissues, corresponding with
presumed metastatic carcinoma. Relevance and novel information To our knowledge, this is the first report of an intracranial meningioma
associated with such an extensive and diffuse calvarial osteolysis in
veterinary medicine. This is also the first description of presumed
metastatic inclusions (adenocarcinoma in this case) inside an intracranial
feline meningioma, which is a rare phenomenon known as tumour-to-tumour
metastasis in human medicine.
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Affiliation(s)
- Alice Dussaux
- Veterinary Hospital Centre of Cordeliers, Meaux, France
| | | | | | - Elise Rattez
- Veterinary Hospital Centre of Cordeliers, Meaux, France
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20
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Wannemacher R, Knebel A, Volk HA, Hansmann F. Cholesterol granuloma in the choroid plexus of a cat. BMC Vet Res 2022; 18:249. [PMID: 35761292 PMCID: PMC9235091 DOI: 10.1186/s12917-022-03358-6] [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: 12/18/2021] [Accepted: 06/21/2022] [Indexed: 11/21/2022] Open
Abstract
Background This case report describes the clinical presentation, magnetic resonance imaging (MRI) as well as the histopathological findings in an elderly cat with an intracranial cholesterol granuloma. Case presentation An 11.5-year-old, male neutered cat was presented at the emergency service with deteriorating behavioral changes including aggression, and progressive generalized ataxia. Magnetic resonance imaging (MRI) of the brain revealed a large, well demarcated, inhomogeneous and contrast enhancing mass in the lateral ventricles with marked mass effect. Due to a poor clinical prognosis, the cat was euthanized. Histological examination identified the mass as a bilateral cholesterol granuloma in the choroid plexus of the lateral ventricles. Conclusions Although plexus cholesterol granulomas are rarely seen in cats, they should be considered as a differential diagnosis in elderly patients with neurological signs such as behavioral changes.
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21
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Belluco S, Marano G, Baiker K, Beineke A, Oevermann A, Seehusen F, Boracchi P, Pumarola M, Mandara MT. Standardisation of canine meningioma grading: Inter-observer agreement and recommendations for reproducible histopathologic criteria. Vet Comp Oncol 2022; 20:509-520. [PMID: 35066998 DOI: 10.1111/vco.12802] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2021] [Revised: 01/04/2022] [Accepted: 01/17/2022] [Indexed: 11/28/2022]
Abstract
The human grading system is currently applied to canine meningioma, although it has not been validated in dogs. The present study focused on standardising the human grading system applied to canine meningioma. Four veterinary neuropathologists graded 186 canine meningiomas as follows: Grade I tumour, with <4 mitoses/2.37 mm2 ; Grade II tumour, with ≥4 mitoses/2.37 mm2 , brain invasion or at least three of the following criteria: sheeting architecture, hypercellularity, small cells, macronucleoli, necrosis; Grade III tumour, with ≥20 mitoses/2.37 mm2 or anaplasia. Slides with grading disagreement were reviewed to define a consensus diagnosis and to assess reproducible criteria. Concordance between histologic grade and the consensus diagnosis, as well as intra- and inter-observer agreements for each criterion, were statistically analysed. Concordance between histologic grade and consensus diagnosis ranged from 59% to 100%, with lower concordance for Grade I and II tumours. The lowest inter-observer agreement was recorded for macronucleoli, small cells, hypercellularity and sheeting architecture. Tumour invasion and necrosis displayed fair agreement, while moderate agreement was reached for mitotic grade and anaplasia. The following recommendations were issued to improve the reproducibility of canine meningioma grading: (1) Assess mitotic grade in consecutive HPFs within the most mitotically active area; (2) Define invasion as neoplastic protrusions within central nervous tissue without pial lining; (3) Report spontaneous necrosis; (4) Report prominent nucleoli when visible at ×100; (5) Report pattern loss when visible at ×100 in >50% of the tumour; (6) Report necrosis, small cells, hypercellularity and macronucleoli, even when focal; (7) Report anaplasia if multifocal.
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Affiliation(s)
- Sara Belluco
- Université de Lyon, VetAgro Sup, ICE UPSP 2016.A104, Axe Cancérologie, Marcy l'Etoile, Lyon, France
| | - Giuseppe Marano
- Department of Biomedical and Clinical Sciences "L. Sacco", University of Milan, Milan, Italy
| | - Kerstin Baiker
- School of Veterinary Medicine and Science, University of Nottingham, Sutton Bonington Campus, Sutton Bonington, UK
| | - Andreas Beineke
- Stiftung Tierärztliche Hochschule Hannover, Institut für Pathologie, Hannover, Germany
| | - Anna Oevermann
- Division of Neurological Sciences, Vetsuisse Faculty, University of Bern, Bern, Switzerland
| | - Frauke Seehusen
- FTA Pathologie, Universität Zürich, Vetsuisse-Fakultät, Institut für Veterinärpathologie, Zürich, Switzerland
| | - Patrizia Boracchi
- Department of Biomedical and Clinical Sciences "L. Sacco", University of Milan, Milan, Italy
| | - Marti Pumarola
- Department Medicina i Cirurgia, Animals, Facultat de Veterinària, Campus UAB, Barcelona, Spain
| | - Maria Teresa Mandara
- Laboratorio di Neuropatologia, Dipartimento di Medicina Veterinaria, Università degli Studi di Perugia, Perugia, Italy
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22
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Jahns H, McElroy MC. Bovine intracranial neoplasia: A retrospective case series. Vet Pathol 2022; 59:824-835. [PMID: 35638647 PMCID: PMC9358308 DOI: 10.1177/03009858221100433] [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: 11/16/2022]
Abstract
This case series describes the clinical and pathological findings of intracranial
neoplasms in cattle, a rare entity. Data and archived tissues from 24
intracranial tumors were reviewed and investigated by immunohistochemistry for
S100, glial fibrillary acidic protein, synaptophysin, pancytokeratin, vimentin,
neuron-specific enolase, oligodendrocyte transcription factor 2, and isocitrate
dehydrogenase 1. Ages of affected cattle ranged from 6 months to 14 years (5.7 ±
3.6 years; mean ± SD). Predominant clinical signs were altered mental state,
central vestibular dysfunction, and cerebellar incoordination. Twelve gliomas,
all high grade, were the most common tumors observed: oligodendrogliomas (n =
6), astrocytomas (n = 4), and undefined gliomas (n = 2). The oligodendrogliomas
were located in the brainstem and extended into the ventricles, whereas all
astrocytomas were located in the forebrain. Isocitrate dehydrogenase 1 gene
mutation as described in humans was not detected. The 5 meningiomas exhibited
microcystic, chordoid, atypical, papillary, and anaplastic subtypes. Metastatic
carcinomas (n = 4) were the only secondary tumor type present, and these were
located at the level of the medulla with infiltration of cranial nerves and in
one case leptomeningeal carcinomatosis. In addition, 2 medulloblastomas and 1
choroid plexus carcinoma were diagnosed. Immunohistochemistry for vimentin and
pancytokeratin was particularly useful to distinguish meningiomas and choroid
plexus carcinoma (positive for vimentin only) from mestastatic carcinomas
(positive for cytokeratin only) as all showed a papillary growth pattern.
Overall, the morphological features were comparable with other species and the
human and canine classifications could be applied.
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Affiliation(s)
| | - Maire C McElroy
- Department of Agriculture, Food and the Marine, Celbridge, Ireland
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23
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Ortiz‐Nisa S, Fuente C, Sant´Ana F, Pumarola M, Añor S. Clinical, imaging and histopathological characteristics of a malignant intracranial meningioma with pulmonary metastasis in a dog. VETERINARY RECORD CASE REPORTS 2022. [DOI: 10.1002/vrc2.365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Sonia Ortiz‐Nisa
- Departament de Medicina i Cirurgia Animal Facultat de Veterinària, Universitat Autònoma de Barcelona Bellaterra Barcelona Spain
- Fundació Hospital Clínic Veterinari Universitat Autònoma de Barcelona Barcelona Spain
| | - Cristian Fuente
- Fundació Hospital Clínic Veterinari Universitat Autònoma de Barcelona Barcelona Spain
| | - Fabiano Sant´Ana
- Veterinary Pathology Department Brasília University Brasília Brazil
| | - Martí Pumarola
- Departament de Medicina i Cirurgia Animal Facultat de Veterinària, Universitat Autònoma de Barcelona Bellaterra Barcelona Spain
- Unitat de Patologia Murina i Comparada (UPMiC) Universitat Autònoma de Barcelona, Bellaterra Barcelona Spain
| | - Sonia Añor
- Departament de Medicina i Cirurgia Animal Facultat de Veterinària, Universitat Autònoma de Barcelona Bellaterra Barcelona Spain
- Fundació Hospital Clínic Veterinari Universitat Autònoma de Barcelona Barcelona Spain
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24
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Forward AK, Volk HA, Cherubini GB, Harcourt-Brown T, Plessas IN, Garosi L, De Decker S. Clinical presentation, diagnostic findings and outcome of dogs undergoing surgical resection for intracranial meningioma: 101 dogs. BMC Vet Res 2022; 18:88. [PMID: 35249530 PMCID: PMC8900440 DOI: 10.1186/s12917-022-03182-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Accepted: 02/23/2022] [Indexed: 11/10/2022] Open
Abstract
Background Meningioma is the most common primary brain neoplasm in dogs. Further information is required regarding the expected long-term prognosis of dogs following the surgical resection of an intracranial meningioma together with the influence of adjunctive therapies. Whilst there have been several studies reporting the long-term outcome of intracranial meningioma resection following surgery alone, surgery with the use of an ultrasonic aspirator, surgery combined with radiotherapy and surgery combined with the addition of hydroxyurea, it is currently unclear which type of adjunctive therapy is associated with the most favourable outcomes. The objective of this study is to describe the presentation and outcome of dogs undergoing surgery for the resection of an intracranial meningioma and the effect of clinical factors, adjunctive therapies and meningioma histopathological subtype on the long-term outcome. Results A hundred and one dogs that had intracranial surgery for meningioma resection were investigated from four referral centres. 94% of dogs survived to hospital discharge with a median survival time of 386 days. Approximately 50% of dogs survived for less than a year, 25% survived between 1 and 2 years, 15% survived between 2 and 3 years and 10% survived for greater than 3 years following discharge from hospital. One or more adjunctive therapies were used in 75 dogs and the analysis of the data did not reveal a clear benefit of a specific type of adjunctive therapy. Those dogs that had a transfrontal approach had a significantly reduced survival time (MST 184 days) compared to those dogs that had a rostrotentorial approach (MST 646 days; p < 0.05). There was no association between meningioma subtype and survival time. Conclusions This study did not identify a clear benefit of a specific type of adjunctive therapy on the survival time. Dogs that had a transfrontal approach had a significantly reduced survival time. Intracranial surgery for meningioma resection offers an excellent prognosis for survival to discharge from hospital with a median long term survival time of 386 days.
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Affiliation(s)
| | - Holger Andreas Volk
- Department of Small Animal Medicine and Surgery, University of Veterinary Medicine Hannover, 30559, Hannover, Germany
| | - Giunio Bruto Cherubini
- Dick White Referrals, Station Farm, London Road, Six Mile Bottom, Cambridgeshire, CB8 0UH, UK
| | - Tom Harcourt-Brown
- Langford Small Animal Referral Hospital, Langford House, Langford, Bristol, BS40 5DU, UK
| | | | | | - Steven De Decker
- Department of Clinical Science and Services, Royal Veterinary College, University of London, North Mymms, AL9 7TA, UK
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25
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Santifort K, Van Soens I, Beukers M, Grinwis G, Lugt J, Mandigers P. Papillary meningioma with multifocal leptomeningeal spread in a dog. VETERINARY RECORD CASE REPORTS 2022. [DOI: 10.1002/vrc2.325] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Koen Santifort
- Evidensia Small Animal Hospital Arnhem Arnhem The Netherlands
- Evidensia Small Animal Hospital Hart van Brabant Waalwijk The Netherlands
| | - Iris Van Soens
- Evidensia Small Animal Hospital Hart van Brabant Waalwijk The Netherlands
| | - Martijn Beukers
- Evidensia Small Animal Hospital Hart van Brabant Waalwijk The Netherlands
- Focus Veterinary Imaging Utrecht The Netherlands
| | - Guy Grinwis
- Veterinary Pathology Diagnostic Centre Department of Biomolecular Health Sciences Faculty of Veterinary Medicine Utrecht University Utrecht The Netherlands
| | - Jaco Lugt
- IDEXX Europe Hoofddorp The Netherlands
| | - Paul Mandigers
- Evidensia Small Animal Hospital Arnhem Arnhem The Netherlands
- Department of Clinical Sciences of Companion Animals Faculty of Veterinary Medicine University of Utrecht Utrecht The Netherlands
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26
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Beneš V, Margoldová M, Bradáč O, Skalický P, Vlach D. Meningiomas in dogs. Surg Neurol Int 2021; 12:551. [PMID: 34877037 PMCID: PMC8645500 DOI: 10.25259/sni_675_2021] [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: 07/06/2021] [Accepted: 09/27/2021] [Indexed: 11/04/2022] Open
Abstract
Background Meningiomas and gliomas are the two most common types of human intracranial tumors. However, meningiomas are not exclusively human tumors and are often seen in dogs and cats. Methods To present meningioma surgery in dogs and compare the surgical possibilities, tumor location, and to show the differences between human and veterinary approaches to tumor profiling. Eleven dogs with meningiomas were treated surgically for 5 years. All tumors except one were resected radically (Simpson 2). Localization of tumors mirrored that of human meningiomas. Results Two dogs died in direct relation to surgery. One died 14 months after surgery due to tumor regrowth. Three dogs died of unrelated causes 10-36 months after tumor resection and five dogs are alive and tumor-free 2-42 months after surgery. Conclusion Radical surgery in dogs is as effective as in humans. Thus, we propose that it should be implemented as first-line treatment. The article is meant to please all those overly curious neurosurgeons in the world.
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Affiliation(s)
- Vladimír Beneš
- Department of Neurosurgery and Neurooncology, Military University Hospital and First Faculty of Medicine Charles University, Prague, Czech Republic
| | - Martina Margoldová
- Department of Veterinary Medicine, VetPark Clinic, Brandys nad Labem, Czech Republic
| | - Ondřej Bradáč
- Department of Neurosurgery and Neurooncology, Military University Hospital and First Faculty of Medicine Charles University, Prague, Czech Republic
| | - Petr Skalický
- Department of Neurosurgery and Neurooncology, Military University Hospital and First Faculty of Medicine Charles University, Prague, Czech Republic
| | - Dominik Vlach
- Department of Veterinary Medicine, VetPark Clinic, Brandys nad Labem, Czech Republic
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27
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Mai W, Burke EE, Reetz JA, Hecht S, Paek M, Church ME, Werre SR, Mariani CL, Griffin JF, Glass EN. High-field MRI using standard pulse sequences has moderate to substantial interobserver agreement and good accuracy for differentiation between intracranial extra-axial histiocytic sarcoma and meningioma in dogs. Vet Radiol Ultrasound 2021; 63:176-184. [PMID: 34881469 DOI: 10.1111/vru.13038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Revised: 08/24/2021] [Accepted: 09/02/2021] [Indexed: 11/30/2022] Open
Abstract
Intracranial extra-axial histiocytic sarcoma shares common MRI features with meningioma. As histiocytic sarcoma carries a generally worse prognosis than meningioma, the ability to differentiate between these two neoplasms is of clinical value. The aim of this retrospective diagnostic accuracy and observer agreement study was to evaluate the accuracy and reliability of high-field MRI to differentiate between these two tumors, using standard pulse sequences and published MRI features. A total of 51 dogs were included (26 meningiomas and 25 histiocytic sarcomas). Magnetic resonance imaging examinations were independently assessed by three experienced board-certified radiologists, evaluating 18 imaging features. They were asked to assign each case to one of three categories (meningioma, histiocytic sarcoma, and undetermined). Agreement for the MRI diagnosis across all three reviewers was moderate (κ 0.54) while paired interobserver agreement ranged from moderate to substantial (κ 0.58-0.74) with percent agreement ranging between 86.1% and 87.7%. Overall, the probability of correctly diagnosing meningioma in a dog with this tumor ranged between 79.2% and 94.4%, and the probability of correctly diagnosing histiocytic sarcoma in a dog with this tumor ranged between 76.0% and 92.3%. The overall probability to diagnose the correct tumor, irrespective of type, ranged between 79.2% and 89.7%. Histiocytic sarcomas tended to have more extensive edema and more often had combined perilesional and distant meningeal enhancement affecting both pachy- and leptomeninges, while for meningiomas, meningeal enhancement tended to more commonly be perilesional and pachymeningeal. Imaging features that seemed more useful to make a correct diagnosis included "location/type of meningeal enhancement," "osseous changes in the adjacent neurocranium," "cystic changes," and "herniation severity."
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Affiliation(s)
- Wilfried Mai
- Department of Clinical Sciences and Advanced Medicine, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Emily E Burke
- Department of Clinical Sciences and Advanced Medicine, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA.,Emily Burke's current affiliation is, Triangle Veterinary Referral Hospitals, Durham, NC
| | - Jennifer A Reetz
- Department of Clinical Sciences and Advanced Medicine, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Silke Hecht
- Department of Small Animal Clinical Sciences, College of Veterinary Medicine, University of Tennessee, Knoxville, Tennessee, USA
| | - Matthew Paek
- Synergy Veterinary Imaging Partners, Virginia, Maryland, USA
| | - Molly E Church
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Stephen R Werre
- Department of Population Health Sciences, Virginia-Maryland College of Veterinary Medicine, Virginia Tech, Blacksburg, Virginia, USA
| | - Christopher L Mariani
- Department of Clinical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina, USA
| | - John F Griffin
- Department of Large Animal Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, Texas, USA
| | - Eric N Glass
- Section of Neurology and Neurosurgery, Red Bank Veterinary Hospital, Compassion First Pet Hospitals, Tinton Falls, New Jersey, USA
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The link between neurology and behavior in veterinary medicine: A review. J Vet Behav 2021. [DOI: 10.1016/j.jveb.2021.07.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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A RETROSPECTIVE STUDY OF BRAIN LESIONS IN CAPTIVE NONDOMESTIC FELIDS. J Zoo Wildl Med 2021; 52:918-925. [PMID: 34687508 DOI: 10.1638/2021-0016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/19/2021] [Indexed: 11/21/2022] Open
Abstract
This retrospective study identified and characterized brain lesions in captive nondomestic felids from a large cat sanctuary. Necropsy reports from January 2002 through December 2018 were examined, and gross images and microscopic slides were reviewed from individual cats, where available. In total, 255 cats met the following inclusion criteria: complete necropsy report available, brain examined grossly or microscopically, and age of >1 mon. Of the 255 cats, 49 cats (19%) were determined to have brain lesions. Eleven different felid species, as well as one captive-bred hybrid (liger), were included in the study, with tigers (Panthera tigris) (55%) and lions (Panthera leo) (18%) being the most common species. Lesions were grouped into six etiologic categories: neoplastic (32%), vascular (26%), inflammatory or infectious (20%), congenital (9%), idiopathic (7%), and metabolic (6%). Not included in these categorized lesions were previously undescribed amphophilic globules in the cerebral cortex of many cats with and without other brain lesions; these were in 95% of lion and 93% of tiger brains where the cerebral cortex was available for histologic examination. These globules were not associated with clinical disease. The histopathologic and gross brain changes documented in this study provide insight into specific diseases and pathologic processes that affect the brains of captive large cat populations.
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Grapes NJ, Taylor-Brown FE, Volk HA, De Decker S. Clinical reasoning in feline vestibular syndrome: which presenting features are the most important? J Feline Med Surg 2021; 23:669-678. [PMID: 33176542 PMCID: PMC10812200 DOI: 10.1177/1098612x20970869] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
OBJECTIVES The aim of this study was to evaluate whether clinical variables from the history, clinical presentation, and physical and neurological examinations of cats with vestibular syndrome were statistically predictive of the underlying diagnosis. METHODS In total, 174 cats presenting with vestibular syndrome between January 2010 and May 2019 were investigated. Univariate statistical analysis of clinical variables was performed and those statistically associated with a diagnosis were retained for multivariable binary logistic regression modelling. RESULTS The seven most prevalent diagnoses represented 95% of vestibular presentations, which included: otitis media/interna (n = 48), idiopathic vestibular syndrome (n = 39), intracranial neoplasia (n = 24), middle ear polyp (n = 17), feline infectious peritonitis (n = 13), thiamine deficiency (n = 13) and intracranial empyema (n = 11). Idiopathic vestibular syndrome was commonly associated with non-purebred cats and had 17.8 times the odds of an improving clinical progression (95% confidence interval [CI] 1.3-250.0; P = 0.03). Intracranial neoplasia was associated with older age and chronic onset of clinical signs, and was significantly more likely to have a central vestibular neuroanatomical localisation (95% CI 8.5-344,349,142.0; P = 0.015) with postural deficits on neurological examination. Thiamine deficiency was more common in female cats, with 52.6 times the odds of a waxing and waning clinical progression (95% CI 1.2-1000; P = 0.038) and 6.8 times the odds of presenting with bilateral vestibular signs (95% CI 1.0-45.7; P = 0.047) and wide excursions of the head (95% CI 1.0-45.7; P = 0.047). Middle ear polyps were associated with 8.8 times the odds of presenting with Horner syndrome (95% CI 1.5-50.0; P = 0.015). CONCLUSIONS AND RELEVANCE Although it may be difficult to identify the underlying diagnosis in cats with vestibular syndrome from the presenting features alone, there are instances in which discrete clinical features may help to guide clinical reasoning when evaluating cats with vestibular presentations.
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Affiliation(s)
- Nicholas J Grapes
- Department of Clinical Science and Services, Royal Veterinary College, North Mymms, Hatfield, UK
| | | | - Holger A Volk
- Department of Small Animal Medicine and Surgery, University of Veterinary Medicine, Hannover, Germany
| | - Steven De Decker
- Department of Clinical Science and Services, Royal Veterinary College, North Mymms, Hatfield, UK
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31
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Saito R, Chambers JK, Kishimoto TE, Uchida K. Pathological and immunohistochemical features of 45 cases of feline meningioma. J Vet Med Sci 2021; 83:1219-1224. [PMID: 34162785 PMCID: PMC8437717 DOI: 10.1292/jvms.21-0258] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Meningioma is the most common primary brain tumor in cats, although there are few reports
about their pathological features. To investigate the histopathological subtypes and
immunohistochemical features including expression of cytokeratin and cell adhesion
molecules, 45 cases of feline meningioma were examined. The mean age was 12.5 years (range
6–21 years). No statistically significant sex predilection was observed. Regarding the
anatomical location of meningioma, tumors mostly developed in the cerebrum, followed by
spinal cord and cerebellum, and multiple meningioma was observed in one cat.
Microscopically, linear or focal mineralization was observed in 40 cases and cholesterol
cleft was observed in 14 cases. Based on histopathological subtypes, there were 15
fibrous, 22 transitional, 2 meningothelial, 5 atypical, and 1 anaplastic meningiomas.
These subtypes are classified into grade 1 (39 cases), grade 2 (5 cases), and grade 3 (1
case). There was no significant difference in the Ki-67 index among histological subtypes
or grades. Immunohistochemically, the tumor cells were positive for cytokeratin in 5 cases
(12.8%), vimentin in 17 cases (43.6%), E-cadherin in 36 cases (92.3%), β-catenin in 21
cases (53.8%), and N-cadherin in 1 case (2.6%), demonstrating the utility of
E-cadherin-immunohistochemistry for the diagnosis of feline meningiomas.
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Affiliation(s)
- Ryo Saito
- Laboratory of Veterinary Pathology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - James K Chambers
- Laboratory of Veterinary Pathology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - Takuya E Kishimoto
- Laboratory of Veterinary Pathology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - Kazuyuki Uchida
- Laboratory of Veterinary Pathology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
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32
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Deutschland M, Hoppe J, Gruber AD. Subcutaneous seeding following surgical excision of an intracranial meningioma in a cat. TIERAERZTLICHE PRAXIS AUSGABE KLEINTIERE HEIMTIERE 2021; 49:60-66. [PMID: 33588467 DOI: 10.1055/a-1274-9244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Traditionally patient owners express their concerns that surgical or diagnostic procedures on a tumor may induce metastasis. In pets, this has been documented in only very rare occasions, e. g. needle path metastases after diagnostic fine needle biopsies of urinary bladder or prostatic tumors. Here, we describe a case of subcutaneous seeding of a feline intracranial grade 1 meningioma 6 months after surgical resection. A 10-year-old male neutered domestic shorthaired cat with typical neurological signs was diagnosed with an extra-axial contrast enhancing mass in the dorsal frontotemporal lobes using magnetic resonance imaging (MRI). Transfronto-parietal bone craniotomy was performed and the 24 × 19 × 22 mm large tumor was largely removed. Tumor recurrence after 12 months resulted in a second surgical tumor removal. In addition, 2 subcutaneous masses of 10 × 4 × 4 mm in size were removed at the site of the original surgical site which were fully separated from the recurring meningeal tumor by the intact frontal bone. Histology and immunohistochemistry suggested the same tumor growth in all 4 masses. Most likely the tumor seeding had been caused during the first surgery. After all, the risk of surgical seeding of a benign tumor seems very low.
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Affiliation(s)
| | - Judith Hoppe
- Institute of Veterinary Pathology, Faculty of Veterinary Medicine, Freie Universität Berlin, Berlin
| | - Achim D Gruber
- Institute of Veterinary Pathology, Faculty of Veterinary Medicine, Freie Universität Berlin, Berlin
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33
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Wada M, Hasegawa D, Hamamoto Y, Yu Y, Asada R, Fujiwara-Igarashi A, Fujita M. Comparison of Canine and Feline Meningiomas Using the Apparent Diffusion Coefficient and Fractional Anisotropy. Front Vet Sci 2021; 7:614026. [PMID: 33506001 PMCID: PMC7829344 DOI: 10.3389/fvets.2020.614026] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Accepted: 12/07/2020] [Indexed: 12/04/2022] Open
Abstract
Meningiomas are the most common intracranial tumor in dogs and cats, and their surgical resection is often performed because they are present on the brain surface. Typical meningiomas show comparatively characteristic magnetic resonance imaging findings that lead to clinical diagnosis; however, it is necessary to capture not only macroscopic changes but also microstructural changes to devise a strategy for surgical resection and/or quality of removal. To visualize such microstructural changes, diffusion-weighted imaging (DWI) and diffusion tensor imaging (DTI) have been used in human medicine. The aim of this retrospective study was to investigate the different characteristics of the apparent diffusion coefficient (ADC) from DWI and fractional anisotropy (FA) from DTI of meningioma between dogs and cats. Statistical analyses were performed to compare ADC and FA values between the intratumoral or peritumoral regions and normal-appearing white matter (NAWM) among 13 dogs (13 lesions, but 12 each in ADC and FA analysis) and six cats (seven lesions). The NAWM of cats had a significantly lower ADC and higher FA compared to dogs. Therefore, for a comparison between dogs and cats, we used ADC and FA ratios that were calculated by dividing the subject (intra- or peritumoral) ADC and FA values by those of NAWM on the contralateral side. Regarding the intratumoral region, feline meningiomas showed a significantly lower ADC ratio and higher FA ratio than canine meningiomas. This study suggested that ADC and FA may be able to distinguish a meningioma that is solid and easy to detach, like as typical feline meningiomas.
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Affiliation(s)
- Masae Wada
- Laboratory of Veterinary Radiology, Nippon Veterinary and Life Science University, Musashino, Japan.,ORM Co.Ltd., Saitama, Japan
| | - Daisuke Hasegawa
- Laboratory of Veterinary Radiology, Nippon Veterinary and Life Science University, Musashino, Japan.,The Research Center for Animal Life Science, Nippon Veterinary and Life Science University, Musashino, Japan
| | - Yuji Hamamoto
- Laboratory of Veterinary Radiology, Nippon Veterinary and Life Science University, Musashino, Japan
| | - Yoshihiko Yu
- Laboratory of Veterinary Radiology, Nippon Veterinary and Life Science University, Musashino, Japan
| | - Rikako Asada
- Laboratory of Veterinary Radiology, Nippon Veterinary and Life Science University, Musashino, Japan
| | - Aki Fujiwara-Igarashi
- Laboratory of Veterinary Radiology, Nippon Veterinary and Life Science University, Musashino, Japan
| | - Michio Fujita
- Laboratory of Veterinary Radiology, Nippon Veterinary and Life Science University, Musashino, Japan
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34
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Minato S, Cherubini GB, Della Santa D, Salvadori S, Baroni M. Incidence and type of brain herniation associated with intracranial meningioma in dogs and cats. J Vet Med Sci 2020; 83:267-273. [PMID: 33342961 PMCID: PMC7972881 DOI: 10.1292/jvms.20-0111] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
The incidence of brain herniation (BH) in association with intracranial meningioma (ICM)
in dogs and cats is poorly described. The aim of this study was to evaluate the rate and
type of brain herniations in client-owned dogs and cats with ICMs and to determine the
meningioma volume (MV) relative to cranial cavity volume (CCV). A retrospective magnetic
resonance imaging (MRI) analysis study of 24 cats and 45 dogs with ICMs was conducted to
ascertain the presence and characteristics of BH. MV and CCV were measured and their ratio
was calculated for each animal. Correlations of MV/CCV with independent variables were
analyzed. BH was encountered in 24/24 cats (100%) and 30/45 dogs (66.7%) with ICMs. In
cats, the most frequent presentation was foramenal herniation (FMH; 23/24, 95.8%),
followed by caudotentorial (CTH; 21/24, 87.5%) and subfalcine (SH; 18/24, 75.0%)
herniation. In dogs, the most frequent presentation was SH (28/45; 62.2%), followed by CTH
(9/45; 20%) and FMH (2/45; 4.4%). Relative to dogs, cats with ICM had greater incidences
of FMH (P<0.001) and CTH (P<0.001). Mean MV/CCV
ratio was higher in cats (0.098) than in dogs (0.038; P<0.001). The
most common clinical sign of ICM was altered behavior in cats (43%,
P<0.01) and seizures in dogs (74.4%, P<0.001). In
conclusion, cats were found to be more likely than dogs to present FMH and CTH, with a
proportionally greater neoplasia volume.
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Affiliation(s)
- Simone Minato
- Valdinievole Veterinary Clinic, Via C. Nigra 123, 51015, Monsummano Terme, PT, Italy
| | - Giunio B Cherubini
- Dick White Referrals, Station Farm, London Road, Six Mile Bottom, Cambridgeshire CB8 0UH, UK
| | | | - Stefano Salvadori
- Institute of Clinical Physiology, National Research Council, Via G. Moruzzi 1, 56124, Pisa, PI, Italy
| | - Massimo Baroni
- Valdinievole Veterinary Clinic, Via C. Nigra 123, 51015, Monsummano Terme, PT, Italy
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35
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Kouno S, Shimada M, Sato A, Kanno N, Suzuki S, Harada Y, Hasegawa D, Hara Y. Surgical treatment of rostrotentorial meningioma complicated by foraminal herniation in the cat. J Feline Med Surg 2020; 22:1230-1237. [PMID: 32478635 PMCID: PMC10814367 DOI: 10.1177/1098612x20924314] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
OBJECTIVES This study was performed to evaluate retrospectively the clinical signs, complications and postoperative outcomes of feline intracranial meningioma (IM) with concurrent cingulate, transtentorial and foramen magnum herniations. METHODS The medical records and MRI scans of cats with IM and cerebral herniation were reviewed. Cases involving concurrent cingulate, transtentorial and foramen magnum herniations were included. Owners were contacted to obtain long-term follow-up information. RESULTS Seven cats (four castrated males and three spayed females) met the inclusion criteria. Median age was 13.0 years (range 9.9-16.1 years) and median duration of clinical signs was 35 days (range 21-163 days). The clinical signs of cats with cerebral herniation included visual impairment (n = 5 [71.4%]), ataxia (n = 4 [57.1%]), impaired consciousness (n = 2 [28.6%]), head pressing (n = 2 [28.6%]), paresis (n = 1 [14.3%]), torticollis (n = 1 [14.3%]) and personality changes (n = 1 [14.3%]). Median tumour volume, cranial cavity volume and tumour volume:intracranial volume ratio before surgery were 3.37 cm3 (range 3.23-11.5 cm3), 32.6 cm3 (range 29.8-78.3 cm3) and 10.4% (range 5.3-35.3%), respectively. Median overall tumour excision rate was 90.6%. Preoperative intracranial pressure (ICP) ranged from 15 to 32 mmHg (median 29 mmHg). In all cases, the ICP dropped to 0 mmHg immediately after tumour removal. No adjuvant therapy was required after surgery. The median survival period was 612 days (range 55-1453 days). CONCLUSIONS AND RELEVANCE The results of this study indicate that surgical treatment of rostrotentorial IM is effective and allows prolonged survival, even in cats with concurrent cingulate, transtentorial and foramen magnum herniations.
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Affiliation(s)
- Shigenori Kouno
- Veterinary Medical Teaching Hospital, Nippon Veterinary and Life Science University, Musashino, Tokyo, Japan
| | - Masakazu Shimada
- Veterinary Medical Teaching Hospital, Nippon Veterinary and Life Science University, Musashino, Tokyo, Japan
| | - Asaka Sato
- Veterinary Medical Teaching Hospital, Nippon Veterinary and Life Science University, Musashino, Tokyo, Japan
| | - Nobuo Kanno
- Veterinary Medical Teaching Hospital, Nippon Veterinary and Life Science University, Musashino, Tokyo, Japan
| | - Shuji Suzuki
- Veterinary Medical Teaching Hospital, Nippon Veterinary and Life Science University, Musashino, Tokyo, Japan
| | - Yasuji Harada
- Veterinary Medical Teaching Hospital, Nippon Veterinary and Life Science University, Musashino, Tokyo, Japan
| | - Daisuke Hasegawa
- Veterinary Medical Teaching Hospital, Nippon Veterinary and Life Science University, Musashino, Tokyo, Japan
| | - Yasushi Hara
- Veterinary Medical Teaching Hospital, Nippon Veterinary and Life Science University, Musashino, Tokyo, Japan
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36
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Günther C, Beckmann KM, Steffen F. Formation of a meningoencephalocele after removal of a frontal lobe meningioma by transfrontal craniotomy in a cat. JFMS Open Rep 2020; 6:2055116920957195. [PMID: 32983552 PMCID: PMC7498976 DOI: 10.1177/2055116920957195] [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: 11/28/2022] Open
Abstract
Case summary A 10-year-old castrated male domestic shorthair cat was referred
for surgical treatment of a left-sided frontal lobe meningioma
diagnosed by CT. Clinically, the cat had generalised
tonic–clonic seizures, which reduced in frequency after
treatment was started with prednisolone. After definition of the
anatomical landmarks of the feline skull, a bilateral
transfrontal craniotomy allowed en bloc removal of the
meningioma. While postoperative recovery was uneventful,
right-sided proprioceptive deficits were still present 6 months
after surgery. MRI detected a probable meningoencephalocele
herniating through the surgical bone defect in the frontal
sinus. Because of the mild neurological deficits and good
quality of life, the meningoencephalocele was not treated.
Thirty-one months after meningioma removal the cat was alive
without further neurological progression. Relevance and novel information To our knowledge, this is the first report to describe, in detail,
the technique of transfrontal craniotomy in cats. Iatrogenic
meningoencephalocele is a complication that has not previously
been described after meningioma removal in cats, and should be
considered as a potential complication after craniotomy.
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Affiliation(s)
- Christian Günther
- Clinic of Small Animal Surgery/Neurology, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland
| | - Katrin M Beckmann
- Clinic of Small Animal Surgery/Neurology, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland
| | - Frank Steffen
- Clinic of Small Animal Surgery/Neurology, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland
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37
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Mandara MT, Foiani G, Silvestri S, Chiaradia E. Immunoexpression of epithelial membrane antigen in canine meningioma: Novel results for perspective considerations. Vet Comp Oncol 2020; 19:115-122. [PMID: 32875656 DOI: 10.1111/vco.12648] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2020] [Revised: 08/26/2020] [Accepted: 08/28/2020] [Indexed: 11/27/2022]
Abstract
Epithelial membrane antigen (EMA) is one of the most widely used diagnostic immunohistochemical markers for human meningioma. To date, no published study on EMA expression in formalin-fixed paraffin-embedded (FFPE) tissue samples of canine meningioma is available. Here, we describe the results of an immunohistochemical study on 25 FFPE canine meningiomas using a monoclonal anti-human EMA antibody. All meningiomas showed positive staining for EMA with cytoplasmic pattern, in nine cases associated with membranous staining. Area and intensity of staining were highly variable among cases. No clear relationships between tumour subtype/grade and area/intensity of staining were found. However, epithelial-like patterns showed a higher affinity for EMA compared to the mesenchymal one. The present study provides the basis to explore the potential diagnostic application of this marker in canine meningioma. To investigate EMA expression in other central nervous system tumours of dogs are necessary to assess the specificity of this marker.
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Affiliation(s)
| | - Greta Foiani
- Department of Veterinary Medicine, University of Perugia, Perugia, Italy
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38
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Frank L, Burigk L, Lehmbecker A, Wohlsein P, Schütter A, Meyerhoff N, Tipold A, Nessler J. Meningioma and associated cerebral infarction in three dogs. BMC Vet Res 2020; 16:177. [PMID: 32503537 PMCID: PMC7275618 DOI: 10.1186/s12917-020-02388-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2019] [Accepted: 05/24/2020] [Indexed: 12/14/2022] Open
Abstract
Background In dogs, meningiomas mostly cause chronic progressive clinical signs due to slow tumor growth. Case presentation In contrast, three dogs were presented with the history of chronic generalized tonic-clonic seizures and peracute deterioration with sudden onset of neurological deficits in accordance with an extensive unilateral forebrain lesion. Magnetic resonance imaging examinations of the dogs revealed a well-delineated extraaxial T2W hyperintense mass in the rostral forebrain with homogeneous contrast enhancement. Additionally, an intraaxial, well-demarcated, unilateral lesion was apparent in the parenchyma supplied by the middle cerebral artery. In two cases, necropsy revealed meningothelial meningioma in the rostral fossa and marked eosinophilic neuronal necrosis, a sign of ischemia, focal malacia, edema and gliosis in the temporal lobe and hippocampus because of a focal thrombosis of the middle cerebral artery. In the third case symptomatic treatment resulted in improvement of clinical signs enabling a good quality of life for the patient. Conclusions In dogs with structural epilepsy caused by meningioma, acute deterioration of clinical signs can be associated with ischemic infarctions as a potential complication.
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Affiliation(s)
- Lisa Frank
- Department of Small Animal Medicine and Surgery, University of Veterinary Medicine Foundation, Hannover, Germany
| | - Laura Burigk
- Department of Pathology, University of Veterinary Medicine Foundation, Hannover, Germany
| | - Annika Lehmbecker
- Department of Pathology, University of Veterinary Medicine Foundation, Hannover, Germany
| | - Peter Wohlsein
- Department of Pathology, University of Veterinary Medicine Foundation, Hannover, Germany
| | - Alexandra Schütter
- Department of Small Animal Medicine and Surgery, University of Veterinary Medicine Foundation, Hannover, Germany
| | - Nina Meyerhoff
- Department of Small Animal Medicine and Surgery, University of Veterinary Medicine Foundation, Hannover, Germany
| | - Andrea Tipold
- Department of Small Animal Medicine and Surgery, University of Veterinary Medicine Foundation, Hannover, Germany
| | - Jasmin Nessler
- Department of Small Animal Medicine and Surgery, University of Veterinary Medicine Foundation, Hannover, Germany.
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39
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Moirano SJ, Dewey CW, Haney S, Yang J. Efficacy of frameless stereotactic radiotherapy for the treatment of presumptive canine intracranial gliomas: A retrospective analysis (2014-2017). Vet Comp Oncol 2020; 18:528-537. [PMID: 32011065 DOI: 10.1111/vco.12573] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Revised: 01/27/2020] [Accepted: 01/28/2020] [Indexed: 01/21/2023]
Abstract
The use of conventional multi-fractionated radiotherapy for the treatment of glial tumours is well documented in the literature. Recently, stereotactic radiotherapy (SRT) has become more widely available allowing for hypo-fractionated protocols; however, its usefulness in the treatment of canine intracranial gliomas is largely undetermined. We conducted a retrospective analysis, including 21 dogs diagnosed with presumptive intracranial gliomas treated with one or more courses of three fractions of 8 to 10 Gy CyberKnife SRT. The objective of this study was to evaluate the efficacy, safety and prognostic factors associated with the use of SRT for the treatment of canine intracranial gliomas. Overall MST for all dogs was 636 days (d). Dogs treated with one course of the described SRT protocol had a MST of 258 days while those treated with >1 course had a MST of 865 days (P = .0077 log rank, 0.0139 Wilcoxon). Dogs treated with one course of SRT who received adjuvant chemotherapy had a MST of >658 days and lived significantly longer than those who did not receive chemotherapy (MST, 230 days) (P = .0414 log rank, 0.0453 Wilcoxon). The most common adverse event included presumptive transient demyelination in 3/21 dogs, which was treated successfully with corticosteroids in all patients. This study provides evidence that SRT is effective in prolonging survival in dogs with intracranial gliomas, and may provide similar results to conventional fractionated protocols, while decreasing the number of hospital visits and anaesthetic episodes. Additionally, it appears that patients can be safely treated with multiple rounds of SRT resulting in improved survival times.
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Affiliation(s)
- Steven J Moirano
- General Medicine and Surgery, The Animal Medical Center, New York City, New York
| | - Curtis W Dewey
- Department of Clinical Sciences, Cornell University, College of Veterinary Medicine, Ithaca, New York.,Department of Neurology/Neurosurgery, Long Island Veterinary Specialists, Plainview, New York.,Department of Neurology, Veterinary Specialists and Emergency Services of Rochester, Rochester, New York
| | - Siobhan Haney
- Department of Radiation Oncology and Cyberknife, Hope Veterinary Specialists and the Veterinary CyberKnife Cancer Center, Malvern, Pennsylvania
| | - Jun Yang
- Department of Radiation Oncology, Drexel University, Philadelphia, Pennsylvania
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40
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Kaid C, Madi RADS, Astray R, Goulart E, Caires-Junior LC, Mitsugi TG, Moreno ACR, Castro-Amarante MF, Pereira LR, Porchia BFMM, de Andrade TO, Landini V, Sanches DS, Pires CG, Tanioka RKO, Pereira MCL, Barbosa IN, Massoco CO, Ferreira LCDS, Okamoto OK, Zatz M. Safety, Tumor Reduction, and Clinical Impact of Zika Virus Injection in Dogs with Advanced-Stage Brain Tumors. Mol Ther 2020; 28:1276-1286. [PMID: 32220305 PMCID: PMC7210722 DOI: 10.1016/j.ymthe.2020.03.004] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2019] [Revised: 02/10/2020] [Accepted: 03/06/2020] [Indexed: 11/19/2022] Open
Abstract
Malignant brain tumors are among the most aggressive cancers with poor prognosis and no effective treatment. Recently, we reported the oncolytic potential of Zika virus infecting and destroying the human central nervous system (CNS) tumors in vitro and in immunodeficient mice model. However, translating this approach to humans requires pre-clinical trials in another immunocompetent animal model. Here, we analyzed the safety of Brazilian Zika virus (ZIKVBR) intrathecal injections in three dogs bearing spontaneous CNS tumors aiming an anti-tumoral therapy. We further assessed some aspects of the innate immune and inflammatory response that triggers the anti-tumoral response observed during the ZIKVBR administration in vivo and in vitro. For the first time, we showed that there were no negative clinical side effects following ZIKVBR CNS injections in dogs, confirming the safety of the procedure. Furthermore, the intrathecal ZIKVBR injections reduced tumor size in immunocompetent dogs bearing spontaneous intracranial tumors, improved their neurological clinical symptoms significantly, and extended their survival by inducing the destruction specifically of tumor cells, sparing normal neurons, and activating an immune response. These results open new perspectives for upcoming virotherapy using ZIKV to destroy and induce an anti-tumoral immune response in CNS tumors for which there are currently no effective treatments.
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Affiliation(s)
- Carolini Kaid
- Human Genome and Stem Cell Research Center (HUG-CEL) Institute of Biosciences, University of São Paulo, Cidade Universitária, São Paulo 055080-090, Brazil
| | | | | | - Ernesto Goulart
- Human Genome and Stem Cell Research Center (HUG-CEL) Institute of Biosciences, University of São Paulo, Cidade Universitária, São Paulo 055080-090, Brazil
| | - Luiz Carlos Caires-Junior
- Human Genome and Stem Cell Research Center (HUG-CEL) Institute of Biosciences, University of São Paulo, Cidade Universitária, São Paulo 055080-090, Brazil
| | - Thiago Giove Mitsugi
- Human Genome and Stem Cell Research Center (HUG-CEL) Institute of Biosciences, University of São Paulo, Cidade Universitária, São Paulo 055080-090, Brazil
| | - Ana Carolina Ramos Moreno
- Vaccine Development Laboratory, Biomedical Sciences Institute, Department of Microbiology, University of São Paulo, São Paulo 05508-900, Brazil
| | - Maria Fernanda Castro-Amarante
- Vaccine Development Laboratory, Biomedical Sciences Institute, Department of Microbiology, University of São Paulo, São Paulo 05508-900, Brazil
| | - Lennon Ramos Pereira
- Vaccine Development Laboratory, Biomedical Sciences Institute, Department of Microbiology, University of São Paulo, São Paulo 05508-900, Brazil
| | | | - Thais Oliveira de Andrade
- Human Genome and Stem Cell Research Center (HUG-CEL) Institute of Biosciences, University of São Paulo, Cidade Universitária, São Paulo 055080-090, Brazil
| | - Vivian Landini
- Human Genome and Stem Cell Research Center (HUG-CEL) Institute of Biosciences, University of São Paulo, Cidade Universitária, São Paulo 055080-090, Brazil
| | | | | | | | - Marcia C L Pereira
- Human Genome and Stem Cell Research Center (HUG-CEL) Institute of Biosciences, University of São Paulo, Cidade Universitária, São Paulo 055080-090, Brazil
| | - Igor Neves Barbosa
- Human Genome and Stem Cell Research Center (HUG-CEL) Institute of Biosciences, University of São Paulo, Cidade Universitária, São Paulo 055080-090, Brazil
| | - Cristina O Massoco
- Department of Pathology, School of Veterinary Medicine and Animal Science, University of São Paulo, São Paulo 05508-270, Brazil
| | - Luís Carlos de Souza Ferreira
- Vaccine Development Laboratory, Biomedical Sciences Institute, Department of Microbiology, University of São Paulo, São Paulo 05508-900, Brazil
| | - Oswaldo Keith Okamoto
- Human Genome and Stem Cell Research Center (HUG-CEL) Institute of Biosciences, University of São Paulo, Cidade Universitária, São Paulo 055080-090, Brazil; Hemotherapy and Cellular Therapy Department, Hospital Israelita Albert Einstein, São Paulo 05652- 900, Brazil
| | - Mayana Zatz
- Human Genome and Stem Cell Research Center (HUG-CEL) Institute of Biosciences, University of São Paulo, Cidade Universitária, São Paulo 055080-090, Brazil.
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Abstract
The pathophysiology of dying and death, related to veterinary patients, has warranted less attention than normal and abnormal physiologic processes related to life preservation. In addition, many veterinary patients are euthanized, which prevents observation of natural disease progression, while ameliorating suffering. Acute death in human medicine can serve as a model for understanding mechanisms of death in veterinary patients under certain conditions. The specific cause of cardiac arrest in several different models of disease elucidates end-stage disease processes. Understanding the path to death and dying in veterinary patients physiologically serves to guide best practices focused on alleviating suffering.
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Affiliation(s)
- Beth Marchitelli
- 4 Paws Farewell: Mobile Pet Hospice, Palliative Care and Home Euthanasia, Asheville, NC, USA.
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42
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Partridge B, Rossmeisl JH. Companion animal models of neurological disease. J Neurosci Methods 2020; 331:108484. [PMID: 31733285 PMCID: PMC6942211 DOI: 10.1016/j.jneumeth.2019.108484] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2019] [Revised: 10/28/2019] [Accepted: 10/28/2019] [Indexed: 02/07/2023]
Abstract
Clinical translation of novel therapeutics that improve the survival and quality of life of patients with neurological disease remains a challenge, with many investigational drug and device candidates failing in advanced stage clinical trials. Naturally occurring inherited and acquired neurological diseases, such as epilepsy, inborn errors of metabolism, brain tumors, spinal cord injury, and stroke occur frequently in companion animals, and many of these share epidemiologic, pathophysiologic and clinical features with their human counterparts. As companion animals have a relatively abbreviated lifespan and genetic background, are immunocompetent, share their environment with human caregivers, and can be clinically managed using techniques and tools similar to those used in humans, they have tremendous potential for increasing the predictive value of preclinical drug and device studies. Here, we review comparative features of spontaneous neurological diseases in companion animals with an emphasis on neuroimaging methods and features, illustrate their historical use in translational studies, and discuss inherent limitations associated with each disease model. Integration of companion animals with naturally occurring disease into preclinical studies can complement and expand the knowledge gained from studies in other animal models, accelerate or improve the manner in which research is translated to the human clinic, and ultimately generate discoveries that will benefit the health of humans and animals.
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Affiliation(s)
- Brittanie Partridge
- Veterinary and Comparative Neuro-Oncology Laboratory, Department of Small Animal Clinical Sciences, Virginia-Maryland College of Veterinary Medicine, Virginia Tech, Blacksburg, VA, 24061, USA; Brain Tumor Center of Excellence, Wake Forest University Comprehensive Cancer Center, Medical Center Blvd, NRC 405, Winston Salem, NC, 27157, USA
| | - John H Rossmeisl
- Veterinary and Comparative Neuro-Oncology Laboratory, Department of Small Animal Clinical Sciences, Virginia-Maryland College of Veterinary Medicine, Virginia Tech, Blacksburg, VA, 24061, USA; Brain Tumor Center of Excellence, Wake Forest University Comprehensive Cancer Center, Medical Center Blvd, NRC 405, Winston Salem, NC, 27157, USA.
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43
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KISHIMOTO TE, UCHIDA K, CHAMBERS JK, KOK MK, SON NV, SHIGA T, HIRABAYASHI M, USHIO N, NAKAYAMA H. A retrospective survey on canine intracranial tumors between 2007 and 2017. J Vet Med Sci 2020; 82:77-83. [PMID: 31801930 PMCID: PMC6983661 DOI: 10.1292/jvms.19-0486] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Accepted: 11/21/2019] [Indexed: 11/29/2022] Open
Abstract
To clarify the prevalence of canine intracranial tumors in Japan, a retrospective study was performed using data on 186 canine intracranial tumors. Of 186 cases, 159 cases (85.5%) were primary and 27 cases (14.5%) were secondary intracranial tumors. Among primary intracranial tumors, meningioma (50.9%) was the most common, followed by glial tumors (21.4%) and primary intracranial histiocytic sarcoma (12.6%). These 3 tumors were most frequently found in middle-aged to elderly dogs without any sex predilection. Regarding glial tumors, the incidence of oligodendroglial tumors (79.4%) was higher than that of astrocytic tumors (17.6%). A significant breed predisposition (P<0.05) was observed for meningioma in Rough Collie, Golden Retriever, Miniature Schnauzer, and Scottish Terrier; for glial tumors in Bouvier de Flandres, French Bulldog, Newfoundland, Bulldog, and Boxer; for primary intracranial histiocytic sarcoma in Pembroke Welsh Corgi, Siberian Husky, and Miniature Schnauzer. The high incidence of oligodendroglial tumors in dogs and the breed predisposition for primary intracranial histiocytic sarcoma in Pembroke Welsh Corgi have not been reported in previous epidemiological studies on canine tumors. Since the incidence of intracranial tumors was vary among dog breeds, the present results demonstrate the uniqueness of the canine breed population in Japan.
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Affiliation(s)
- Takuya E. KISHIMOTO
- Laboratory of Veterinary Pathology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657,
Japan
| | - Kazuyuki UCHIDA
- Laboratory of Veterinary Pathology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657,
Japan
| | - James K. CHAMBERS
- Laboratory of Veterinary Pathology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657,
Japan
| | - Mun Keong KOK
- Laboratory of Veterinary Pathology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657,
Japan
| | - Nguyen V. SON
- Laboratory of Veterinary Pathology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657,
Japan
| | - Takanori SHIGA
- Laboratory of Veterinary Pathology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657,
Japan
| | - Miyuki HIRABAYASHI
- Laboratory of Veterinary Pathology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657,
Japan
| | - Nanako USHIO
- Laboratory of Veterinary Pathology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657,
Japan
| | - Hiroyuki NAKAYAMA
- Laboratory of Veterinary Pathology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657,
Japan
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44
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Demeter EA, Frank C, Rissi DR, Porter BF, Miller AD. Microtubule-Associated Protein 2 Expression in Canine Glioma. Front Vet Sci 2019; 6:395. [PMID: 31803765 PMCID: PMC6872496 DOI: 10.3389/fvets.2019.00395] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2019] [Accepted: 10/24/2019] [Indexed: 12/22/2022] Open
Abstract
Canine glioma is considered a potential model for human glioma, with recent studies of occurrence, therapy, and reclassification supporting the value of the canine model. The current diagnosis of canine glioma is based on morphologic criteria and immunohistochemistry (IHC), including oligodendrocyte transcription factor 2 (Olig2), glial fibrillary acidic protein (GFAP), and 2′, 3′ cyclic nucleotide phosphatase (CNPase). Microtubule-associated protein 2 (MAP2) is a proven marker of human glioma and is used to complement the diagnosis and its specific immunoreactivity pattern contributes to the differentiation of astrocytomas from other glial tumors. The objective of this study was to evaluate whether canine gliomas express MAP2 and to explore differences in the pattern of immunolabeling between different gliomas. Seventy-eight cases of canine glioma were evaluated for MAP2 expression by immunohistochemistry. A glial origin was supported by Olig2 IHC in all cases. MAP2 immunolabeling was evaluated on a semi-quantitative basis, including the percentage of immunolabeled neoplastic cells, as well as the signal intensity, distribution, and pattern of immunolabeling. MAP2 was expressed in all cases, with significant correlation between diagnosis and signal intensity (P = 0.04). MAP2 immunolabeling distribution was dominated by diffuse (34/78; 44%), followed by patchy (20/78; 26%), multifocal to coalescing (16/78; 21%), and scattered (8/78; 10%). All oligodendrogliomas (53/53; 100%) and undefined gliomas (12/12; 100%) revealed a combination of perinuclear and cytoplasmic immunolabeling, and all but 3 astrocytomas had a combination of perinuclear and cytoplasmic processes immunolabeling (10/13; 77%). Significant correlation between immunolabeling pattern and diagnosis was obtained (P = 0.001). The study demonstrates that MAP2 is expressed in canine gliomas and the pattern of expression can also be applied to help distinguish astrocytomas from oligodendrogliomas and undefined gliomas.
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Affiliation(s)
- Elena Alina Demeter
- Department of Biomedical Sciences, Section of Anatomic Pathology, Cornell University College of Veterinary Medicine, Ithaca, NY, United States
| | - Chad Frank
- Department of Microbiology, Immunology, and Pathology, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, CO, United States
| | - Daniel R Rissi
- Athens Veterinary Diagnostic Laboratory and Department of Pathology, University of Georgia College of Veterinary Medicine, Athens, GA, United States
| | - Brian F Porter
- Department of Veterinary Pathobiology, College of Veterinary Medicine & Biomedical Sciences, Texas A&M University, College Station, TX, United States
| | - Andrew D Miller
- Department of Biomedical Sciences, Section of Anatomic Pathology, Cornell University College of Veterinary Medicine, Ithaca, NY, United States
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45
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Fages J, Oura TJ, Sutherland-Smith J, Jennings SH. Atypical and malignant canine intracranial meningiomas may have lower apparent diffusion coefficient values than benign tumors. Vet Radiol Ultrasound 2019; 61:40-47. [PMID: 31600030 DOI: 10.1111/vru.12814] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Revised: 07/28/2019] [Accepted: 08/05/2019] [Indexed: 01/06/2023] Open
Abstract
Canine intracranial meningiomas can be graded based on histological classification as benign (grade I), atypical (grade II), and anaplastic or malignant (grade III). In people, grade II/III meningiomas behave more aggressively, have a higher potential for recurrence after surgical resection, and have lower apparent diffusion coefficient (ADC) values with diffusion weighted imaging (DWI). In this retrospective analytical cross-sectional study, 42 dogs had ADC values quantified in an attempt to differentiate tumor histologic grade. Our hypothesis was that ADC values would be significantly lower in grade II and III versus grade I meningiomas in dogs. On each ADC image, a polygonal region of interest (ROI) was hand-drawn along the lesion's periphery, excluding fluid-filled and hemorrhagic regions. Mean ADC value (ADCmean ) and minimum ADC value (ADCmin ) were calculated. Additionally, two smaller, ovoid ROI were drawn within the lesion with mean ADC calculated (ADCmean sR and ADCmin sR ). Normalized ADC values using white matter were also calculated (ADCn and ADCn sR ). Grades of each tumor were assigned based on histopathology review. Association between ADC parameters and histological grade was tested by means of two-sample t-tests. There were 14 grade I (33.3%), 25 grade II (59.5%), and three grade III (7.2%) meningiomas. ADCmean sR and ADCmin sR were significantly lower when comparing grade II/III to grade I (P < .05). Grade II tumors had significantly lower ADCmean , ADCmean sR , ADCmin sR , ADCn , and ADCn sR than grade I meningiomas. This preliminary study supports the potential of ADC values to help predict the histological grade of intracranial meningiomas in dogs.
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Affiliation(s)
- Julien Fages
- Departments of Clinical Sciences, Cummings School of Veterinary Medicine at Tufts University, North Grafton, Massachusetts
| | - Trisha J Oura
- Departments of Clinical Sciences, Cummings School of Veterinary Medicine at Tufts University, North Grafton, Massachusetts
| | - James Sutherland-Smith
- Departments of Clinical Sciences, Cummings School of Veterinary Medicine at Tufts University, North Grafton, Massachusetts
| | - Samuel H Jennings
- Biomedical Sciences, Cummings School of Veterinary Medicine at Tufts University, North Grafton, Massachusetts
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46
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Meier V, Besserer J, Rohrer Bley C. Using biologically based objectives to optimize boost intensity-modulated radiation therapy planning for brainstem tumors in dogs. Vet Radiol Ultrasound 2019; 61:77-84. [PMID: 31600027 PMCID: PMC7004177 DOI: 10.1111/vru.12815] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2019] [Revised: 06/22/2019] [Accepted: 09/07/2019] [Indexed: 12/17/2022] Open
Abstract
Irradiated brain tumors commonly progress at the primary site, generating interest in focal dose escalation. The aim of this retrospective observational study was to use biological optimization objectives for a modeling exercise with simultaneously‐integrated boost IMRT (SIB‐IMRT) to generate a dose‐escalated protocol with acceptable late radiation toxicity risk estimate and improve tumor control for brainstem tumors in dogs safely. We re‐planned 20 dog brainstem tumor datasets with SIB‐IMRT, prescribing 20 × 2.81 Gy to the gross tumor volume (GTV) and 20 × 2.5 Gy to the planning target volume. During the optimization process, we used biologically equivalent generalized equivalent uniform doses (gEUD) as planning aids. These were derived from human data, calculated to adhere to normal tissue complication probability (NTCP) ≤5%, and converted to the herein used fractionation schedule. We extracted the absolute organ at risk dose‐volume histograms to calculate NTCP of each individual plan. For planning optimization, gEUD(a = 4) = 39.8 Gy for brain and gEUD(a = 6.3) = 43.8 Gy for brainstem were applied. Mean brain NTCP was low with 0.43% (SD ±0.49%, range 0.01‐2.04%); mean brainstem NTCP was higher with 7.18% (SD ±4.29%, range 2.87‐20.72%). Nevertheless, NTCP of < 10% in brainstem was achievable in 80% (16/20) of dogs. Spearman's correlation between relative GTV and NTCP was high (ρ = 0.798, P < .001), emphasizing increased risk with relative size even with subvolume‐boost. Including biologically based gEUD values into optimization allowed estimating NTCP during the planning process. In conclusion, gEUD‐based SIB‐IMRT planning resulted in dose‐escalated treatment plans with acceptable risk estimate of NTCP < 10% in the majority of dogs with brainstem tumors. Risk was correlated with relative tumor size.
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Affiliation(s)
- Valeria Meier
- Division of Radiation Oncology, Small Animal Department, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland.,Department of Physics, University of Zurich, Zurich, Switzerland
| | - Jürgen Besserer
- Division of Radiation Oncology, Small Animal Department, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland.,Department of Physics, University of Zurich, Zurich, Switzerland.,Radiation Oncology, Hirslanden Clinic, Zurich, Switzerland
| | - Carla Rohrer Bley
- Division of Radiation Oncology, Small Animal Department, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland
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47
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Kohler RJ, Arnold SA, Eck DJ, Thomson CB, Hunt MA, Pluhar GE. Incidence of and risk factors for major complications or death in dogs undergoing cytoreductive surgery for treatment of suspected primary intracranial masses. J Am Vet Med Assoc 2019; 253:1594-1603. [PMID: 30668253 DOI: 10.2460/javma.253.12.1594] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
OBJECTIVE To determine incidence of and risk factors for major complications occurring in dogs within 30 days after cytoreductive surgery performed by a single pair of surgeons for treatment of suspected primary intracranial masses. DESIGN Retrospective cohort study. ANIMALS 160 client-owned dogs that underwent cytoreductive surgery for treatment of suspected primary intracranial masses between January 2009 and December 2015 at a veterinary teaching hospital. PROCEDURES Medical records were retrospectively reviewed for complications occurring within 30 days after surgery. Data (eg, signalment, clinical signs, previous treatments, preoperative neurologic examination findings, neuroanatomical location, time from onset of clinical signs to surgery, surgical approach, and histopathologic diagnosis) were analyzed for associations with death and with development of major complications other than death. RESULTS 21 (13.1%) dogs died (11 during hospitalization and 10 after discharge) and 30 (18.8%) developed major complications other than death during the first 30 days after surgery. Dogs with abnormal preoperative neurologic examination findings were more likely to develop complications or die. Dogs undergoing a suboccipital approach were more likely to die. The most common postoperative complications other than death were seizures (n = 18 [11.3%]), worsening of neurologic status (6 [3.8%]), and aspiration pneumonia (6 [3.8%]). CONCLUSIONS AND CLINICAL RELEVANCE Results of the present study provided valuable information on predisposing factors, odds of major complications or death, and incidences of major complications or death in dogs during the first 30 days after undergoing cytoreductive surgery for treatment of suspected primary intracranial masses. Careful case selection may help improve outcomes and minimize complications.
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48
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Elbert J, Peck S, Hayes D, Taylor J, Smith J. Anaplastic meningioma in a Tasmanian devil (
Sarcophilus harrisii
). VETERINARY RECORD CASE REPORTS 2019. [DOI: 10.1136/vetreccr-2018-000650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Jessica Elbert
- College of Veterinary MedicineIowa State UniversityAmesIowaUSA
| | - Sarah Peck
- Department of Primary IndustriesParks, Water and Environment, Wildlife Management BranchHobartTasmaniaAustralia
| | - Dane Hayes
- Animal Health LaboratoryTasmanian Department of Primary Industries, Parks, Water and EnvironmentHobartTasmaniaAustralia
| | - Jim Taylor
- Animal Health LaboratoryTasmanian Department of Primary Industries, Parks, Water and EnvironmentHobartTasmaniaAustralia
| | - Jodi Smith
- Veterinary PathologyIowa State UniversityAmesIowaUSA
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49
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Tayari H, Bell A. Dexmedetomidine infusion as perioperative adjuvant in a dog undergoing craniotomy. VETERINARY RECORD CASE REPORTS 2019. [DOI: 10.1136/vetreccr-2018-000727] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Affiliation(s)
- Hamaseh Tayari
- School of Veterinary MedicineUniversity of GlasgowGlasgowUK
| | - Andrew Bell
- School of Veterinary MedicineUniversity of GlasgowGlasgowUK
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50
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Somatostatin Receptor 2 Expression in Canine Meningioma. J Comp Pathol 2019; 166:59-68. [DOI: 10.1016/j.jcpa.2018.11.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2018] [Revised: 11/01/2018] [Accepted: 11/07/2018] [Indexed: 12/14/2022]
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