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Didehvar DS, Lanza MR, Atherton MJ, Lenz JA. Malignant transformation and subsequent leptomeningeal carcinomatosis of a gastric polyp in a dog. J Vet Intern Med 2024; 38:1744-1750. [PMID: 38587203 PMCID: PMC11099795 DOI: 10.1111/jvim.17072] [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: 11/02/2023] [Accepted: 03/27/2024] [Indexed: 04/09/2024] Open
Abstract
Progressive carcinogenesis of a gastric polyp with transformation to gastric adenocarcinoma and subsequent development of leptomeningeal carcinomatosis is described in an adult male Scottish terrier. Presenting clinical signs consisted of vomiting with intermittent hematemesis. Surgical biopsies over the course of 14 months documented the progression from gastric polyp to minimally invasive gastric carcinoma to invasive gastric adenocarcinoma, a pathogenesis not previously documented in veterinary oncology. The patient ultimately developed neurologic pathology and was euthanized, and necropsy evaluation identified widespread carcinomatosis with accompanying leptomeningeal metastasis. As in humans, gastric polyps in dogs rarely have malignant potential.
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Affiliation(s)
- Dillon S. Didehvar
- Department of Clinical Science & Advanced MedicineSchool of Veterinary Medicine, University of PennsylvaniaPhiladelphiaPennsylvaniaUSA
| | - Matthew R. Lanza
- Department of PathobiologySchool of Veterinary Medicine, University of PennsylvaniaPhiladelphiaPennsylvaniaUSA
- Present address:
Department of Comparative Medicine, College of MedicinePennsylvania State UniversityHersheyPennsylvaniaUSA
| | - Matthew J. Atherton
- Department of Clinical Science & Advanced MedicineSchool of Veterinary Medicine, University of PennsylvaniaPhiladelphiaPennsylvaniaUSA
- Department of Biomedical SciencesSchool of Veterinary Medicine, University of PennsylvaniaPhiladelphiaPennsylvaniaUSA
| | - Jennifer A. Lenz
- Department of Clinical Science & Advanced MedicineSchool of Veterinary Medicine, University of PennsylvaniaPhiladelphiaPennsylvaniaUSA
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2
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Al Kafaji T, Cantile C, Tocco F, Gallucci A. Detection of Leptomeningeal Carcinomatosis by Cerebrospinal Fluid in a Dog with a Negative MRI. J Am Anim Hosp Assoc 2023; 59:184-187. [PMID: 37432787 DOI: 10.5326/jaaha-ms-7338] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/22/2023] [Indexed: 07/13/2023]
Abstract
An 11 yr old female French bulldog was presented for acute onset of seizures and a 2 wk history of disorientation. On physical examination, a nodular mass at the fourth mammary gland level was observed. Neurological evaluation showed obtundation and compulsive behavior. Brain MRI study did not reveal any abnormalities. Cerebrospinal fluid (CSF) collected from the cerebellomedullary cistern showed a marked increase of total nucleated cell count (400 cells/μL). Cytological evaluation identified the presence of a monomorphic round cell population characterized by large cell bodies, a single eccentrical located nucleus with high nuclear:cytoplasmatic ratio, and marked atypia with anisocytosis, anisokaryosis, and multiple nucleoli. Leptomeningeal carcinomatosis (LC) was suspected. The dog was euthanatized for worsening of clinical signs. Post-mortem examination identified an anaplastic mammary carcinoma in the nodular mammary mass. Infiltration by neoplastic cells exhibiting the same morphological features was detected along leptomeninges of the telencephalon and cerebellum associated with cortical and subcortical parenchymal micrometastases. To our knowledge, this is the first case of LC in a dog detected by CSF evaluation but without any MRI abnormalities. This finding emphasizes the usefulness of CSF cytology in patients with suspected LC even in the absence of any MRI identifiable lesions.
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Affiliation(s)
- Tania Al Kafaji
- From Veterinary Neurological Center "La Fenice," Selargius, Italy (T.A.K., F.T., A.G.)
| | - Carlo Cantile
- Veterinary Neuropathology, Department of Veterinary Medical Sciences, University of Pisa, Pisa, Italy
| | - Fabio Tocco
- From Veterinary Neurological Center "La Fenice," Selargius, Italy (T.A.K., F.T., A.G.)
| | - Antonella Gallucci
- From Veterinary Neurological Center "La Fenice," Selargius, Italy (T.A.K., F.T., A.G.)
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3
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Weston PJ, Baines SJ, Finotello R, Mortier JR. Clinical, CT, and ultrasonographic features of canine and feline pleural and peritoneal carcinomatosis and sarcomatosis. Vet Radiol Ultrasound 2021; 62:331-341. [PMID: 33476083 DOI: 10.1111/vru.12951] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 11/16/2020] [Accepted: 11/19/2020] [Indexed: 12/11/2022] Open
Abstract
Carcinomatosis and sarcomatosis describe the widespread dissemination of metastatic neoplastic cells throughout the body. Studies describing their clinical and imaging features in veterinary patients are limited. The objective of this retrospective, multicenter, cross-sectional study is to describe the clinical, ultrasonographic, and CT features of pleural and peritoneal carcinomatosis and sarcomatosis in dogs and cats to aid detection and differentiation of these lesions. Medical records and CT and ultrasonographic images were reviewed. Although a large degree of overlap was observed between the imaging features and clinical signs of canine and feline carcinomatosis and sarcomatosis, some distinguishing features were observed. Dogs were significantly more likely to present with abdominal pain compared to cats (P = .022), whereas cats more commonly presented with inappetence (P = .019). Dogs with sarcomatosis had a significantly heavier bodyweight than dogs with carcinomatosis (P = .005), largely due to a higher prevalence of splenic hemangiosarcoma in this patient cohort. Peritoneal effusion was more frequently observed in dogs with carcinomatosis compared to dogs with sarcomatosis (P = .021). Imaging and clinical features observed in this study may help to distinguish sarcomatosis and carcinomatosis lesions. Due to the large degree of overlap observed, cytological or histopathological analysis is recommended for definitive diagnosis.
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Affiliation(s)
| | | | - Riccardo Finotello
- Department of Small Animal Clinical Science, Institute of Infection, Veterinary and Ecological Science, University of Liverpool, Neston, UK
| | - Jeremy R Mortier
- Department of Small Animal Clinical Science, Institute of Infection, Veterinary and Ecological Science, University of Liverpool, Neston, UK
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4
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WU CC, HUANG WH, LIAO PW, CHANG YP. Diagnosis of meningeal melanomatosis in a dog using magnetic resonance imaging and cerebrospinal fluid findings. J Vet Med Sci 2021; 83:94-99. [PMID: 33250483 PMCID: PMC7870402 DOI: 10.1292/jvms.20-0556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Accepted: 11/14/2020] [Indexed: 11/30/2022] Open
Abstract
A 13-year-old spayed female Labrador Retriever was presented with severe progressive tetraparesis. The neuroanatomic localization was the C1-C5 spinal cord segments with brainstem or cranial nerve involvement. Magnetic resonance imaging revealed diffuse T1-weighted and T2-weighted hyperintense lesions with strong contrast enhancement spreading through meninges of the cervical spinal cord and the brain. Few small round areas showing T1-weighted hyperintensity and T2-weighted hypointensity were scattered within the lesions. Cerebrospinal fluid analysis revealed neoplastic round cells and possible melanocytes. Malignant melanoma was suspected. At necropsy, the brain and the entire spinal cord were covered with thick, dark membranous tissue. Based on histopathologic findings, a positive response against Melan-A, and no melanoma identified outside the central nervous system, primary meningeal melanomatosis was diagnosed.
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Affiliation(s)
- Chih-Ching WU
- National Taiwan University Veterinary Hospital, National Taiwan University, Taipei 10617, Taiwan
| | - Wei-Hsiang HUANG
- Graduate Institute of Molecular and Comparative Pathobiology, School of Veterinary Medicine, National Taiwan University, Taipei 10617, Taiwan
| | - Pei-Wen LIAO
- Graduate Institute of Molecular and Comparative Pathobiology, School of Veterinary Medicine, National Taiwan University, Taipei 10617, Taiwan
| | - Ya-Pei CHANG
- National Taiwan University Veterinary Hospital, National Taiwan University, Taipei 10617, Taiwan
- Graduate Institute of Veterinary Clinical Science, School of Veterinary Medicine, National Taiwan University, Taipei 10617, Taiwan
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Crespo V, Ortega M, Stabile F, Di Palma S, Fernández Y. Meningeal carcinomatosis secondary to a suspected pulmonary carcinoma in a cat and comparison with human literature. VETERINARY RECORD CASE REPORTS 2018. [DOI: 10.1136/vetreccr-2018-000704] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Affiliation(s)
- Virginia Crespo
- Department of NeurologyUniversity of Bristol School of Veterinary SciencesBristolUK
| | - Maria Ortega
- Department of NeurologyClinica IndautxuBilbaoSpain
| | - Fabio Stabile
- Department of NeurologyAnimal Health TrustNewmarketUK
- Department of NeurosurgeryAnimal Health TrustNewmarketUK
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Posporis C, Grau-Roma L, Travetti O, Oliveira M, Polledo L, Wessmann A. Meningeal carcinomatosis and spinal cord infiltration caused by a locally invasive pulmonary adenocarcinoma in a cat. JFMS Open Rep 2017; 3:2055116917742812. [PMID: 29204290 PMCID: PMC5703112 DOI: 10.1177/2055116917742812] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Case summary A 12-year-old domestic shorthair cat was presented with acute non-painful hindlimb proprioceptive ataxia localising to T3–L3 spinal cord segments. MRI revealed paravertebral muscular hyperintensity on T2-weighted images at the level of T7–T8 vertebrae. The cat improved on conservative management but deteriorated 3 months later. Repeated MRI showed meningeal enhancement at the same level and hyperintensity of the paravertebral musculature extending to the right thoracic wall and pleural space on short tau inversion recovery images. Thoracic CT showed mineralised lesions of the right lung, restricted pleural effusion and expansile bone lesions affecting multiple ribs. The cat had been treated for pyothorax 5 years earlier but manifested no current respiratory signs. Cerebrospinal fluid (CSF) examination showed lymphocytic pleocytosis but no neoplastic cells. Biopsy of the affected muscles and cytology of the lung and pleural lesions suggested a malignant epithelial cell tumour. Post-mortem examination confirmed a pulmonary adenocarcinoma locally infiltrating the thoracic wall, T7–T8 vertebrae and the spinal cord white matter. Meningeal carcinomatosis was detected with neoplastic cells invading the ventral median fissure of the spinal cord. No metastases were observed in other organs, indicating that neoplastic cells reached the spinal cord by direct extension. Relevance and novel information Spinal meningeal carcinomatosis has not been reported in dogs or cats with extraneural tumours but is a well-recognised condition in humans. A metastatic cause of meningeal enhancement should be considered in patients with neurological signs of unknown origin. Imaging findings and CSF results can be non-specific.
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Affiliation(s)
- Christoforos Posporis
- Department of Neurology / Neurosurgery, Pride Veterinary Centre, Derby, UK.,School of Veterinary Medicine and Science, University of Nottingham, UK
| | - Llorenç Grau-Roma
- School of Veterinary Medicine and Science, University of Nottingham, UK
| | - Olga Travetti
- Department of Radiology, Pride Veterinary Centre, Derby, UK
| | - Maria Oliveira
- School of Veterinary Medicine and Science, University of Nottingham, UK
| | - Laura Polledo
- School of Veterinary Medicine and Science, University of Nottingham, UK
| | - Annette Wessmann
- Department of Neurology / Neurosurgery, Pride Veterinary Centre, Derby, UK
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7
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Posporis C, Grau-Roma L, Travetti O, Oliveira M, Polledo L, Wessmann A. Meningeal carcinomatosis and spinal cord infiltration caused by a locally invasive pulmonary adenocarcinoma in a cat. JFMS Open Rep 2017. [PMID: 29204290 DOI: 10.1177/2055116917742812.] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Case summary A 12-year-old domestic shorthair cat was presented with acute non-painful hindlimb proprioceptive ataxia localising to T3-L3 spinal cord segments. MRI revealed paravertebral muscular hyperintensity on T2-weighted images at the level of T7-T8 vertebrae. The cat improved on conservative management but deteriorated 3 months later. Repeated MRI showed meningeal enhancement at the same level and hyperintensity of the paravertebral musculature extending to the right thoracic wall and pleural space on short tau inversion recovery images. Thoracic CT showed mineralised lesions of the right lung, restricted pleural effusion and expansile bone lesions affecting multiple ribs. The cat had been treated for pyothorax 5 years earlier but manifested no current respiratory signs. Cerebrospinal fluid (CSF) examination showed lymphocytic pleocytosis but no neoplastic cells. Biopsy of the affected muscles and cytology of the lung and pleural lesions suggested a malignant epithelial cell tumour. Post-mortem examination confirmed a pulmonary adenocarcinoma locally infiltrating the thoracic wall, T7-T8 vertebrae and the spinal cord white matter. Meningeal carcinomatosis was detected with neoplastic cells invading the ventral median fissure of the spinal cord. No metastases were observed in other organs, indicating that neoplastic cells reached the spinal cord by direct extension. Relevance and novel information Spinal meningeal carcinomatosis has not been reported in dogs or cats with extraneural tumours but is a well-recognised condition in humans. A metastatic cause of meningeal enhancement should be considered in patients with neurological signs of unknown origin. Imaging findings and CSF results can be non-specific.
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Affiliation(s)
- Christoforos Posporis
- Department of Neurology / Neurosurgery, Pride Veterinary Centre, Derby, UK.,School of Veterinary Medicine and Science, University of Nottingham, UK
| | - Llorenç Grau-Roma
- School of Veterinary Medicine and Science, University of Nottingham, UK
| | - Olga Travetti
- Department of Radiology, Pride Veterinary Centre, Derby, UK
| | - Maria Oliveira
- School of Veterinary Medicine and Science, University of Nottingham, UK
| | - Laura Polledo
- School of Veterinary Medicine and Science, University of Nottingham, UK
| | - Annette Wessmann
- Department of Neurology / Neurosurgery, Pride Veterinary Centre, Derby, UK
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8
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Zhu M, Ren Y, Liu Y, Ban C, Gu H, Wang Z, Zhang Y. [Analysis of Clinicopathological Feature and Prognosis for
Leptomeningeal Metastasis in Non-small Cell Lung Cancer]. ZHONGGUO FEI AI ZA ZHI = CHINESE JOURNAL OF LUNG CANCER 2017; 19:533-8. [PMID: 27561804 PMCID: PMC5972984 DOI: 10.3779/j.issn.1009-3419.2016.08.09] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
背景与目的 脑膜转移(leptomeningeal metastasis, LM)是晚期非小细胞肺癌(non-small cell lung cancer, NSCLC)严重并发症之一, 生活质量降低, 预后差。本研究旨在探讨NSCLC-LM患者的临床病理特征及预后。 方法 回顾性分析2015年1月-2016年6月首都医科大学附属北京朝阳医院收治的3例NSCLC-LM患者的临床资料, 并结合文献进行分析。 结果 3例患者均为肺腺癌, 且表皮生长因子受体(epidermal growth factor receptor, EGFR)21外显子L858R突变(mutations, m), 其中男性1例, 女性2例; 年龄59岁-64岁, 平均年龄61.3岁, 主要临床表现及查体:头痛(3/3)、头晕(3/3)、恶心呕吐(3/3)、癫痫(2/3)、复视(1/3)、听力下降(1/3)、脑膜刺激征(3/3)。出现症状到LM确诊时间为1个月-4个月(平均2.3个月)。除了1例肺癌和LM同时诊断, 2例分别在EGFR酪氨酸激酶抑制剂(tyrosine kinase inhibitors, TKIs)和化疗进展后出现LM, 肺癌到LM平均确诊时间为8.5个月。3例患者脑增强磁共振成像(magnetic resonance imaging, MRI)均显示软脑膜线性强化; 3例脑脊液中找到癌细胞, 其中2例行EGFR检测, 均为EGFR 21外显子L858R突变。2例患者接受TKIs治疗, 症状好转, 其中1例联合替莫唑胺, 无进展生存期(progression-free survival, PFS)达4.9个月, 总生存时间(overall survival, OS)为13.9个月。 结论 EGFRm肺腺癌可能易出现LM; NSCLC-LM症状不典型, 易漏诊、误诊; TKIs联合替莫唑胺可能是EGFRm-NSCLC-LM的治疗选择。
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Affiliation(s)
- Min Zhu
- Beijing Institute of Respiratory Medicine, Department of Respiratory and Critical Care Medicine, Beijing Chao-Yang Hospital, Capital Medical University, Beijing 100020, China
| | - Yanhong Ren
- Department of Pulmonary and Critical Care Medicine, China-Japan Friendship Hospital, Beijing 100029, China
| | - Yan Liu
- Beijing Institute of Respiratory Medicine, Department of Respiratory and Critical Care Medicine, Beijing Chao-Yang Hospital, Capital Medical University, Beijing 100020, China
| | - Chengjun Ban
- Beijing Institute of Respiratory Medicine, Department of Respiratory and Critical Care Medicine, Beijing Chao-Yang Hospital, Capital Medical University, Beijing 100020, China
| | - Hua Gu
- Beijing Institute of Respiratory Medicine, Department of Respiratory and Critical Care Medicine, Beijing Chao-Yang Hospital, Capital Medical University, Beijing 100020, China
| | - Zheng Wang
- Department of Pathology, Beijing Hospital, Beijing 100730, China
| | - Yuhui Zhang
- Beijing Institute of Respiratory Medicine, Department of Respiratory and Critical Care Medicine, Beijing Chao-Yang Hospital, Capital Medical University, Beijing 100020, China
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Moore AR, Coffey E, Leavell SE, Krafsur G, Duncan C, Dowers K, Santangelo KS. Canine bicavitary carcinomatosis with transient needle tract metastasis diagnosed by multiplex immunocytochemistry. Vet Clin Pathol 2016; 45:495-500. [DOI: 10.1111/vcp.12394] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- A Russell Moore
- Department of Microbiology, Immunology, and Pathology; College of Veterinary Medicine and Biomedical Sciences; Colorado State University; Fort Collins CO USA
| | - Emily Coffey
- Department of Clinical Sciences; College of Veterinary Medicine and Biomedical Sciences; Colorado State University; Fort Collins CO USA
| | - Sarah E. Leavell
- Department of Microbiology, Immunology, and Pathology; College of Veterinary Medicine and Biomedical Sciences; Colorado State University; Fort Collins CO USA
| | - Greta Krafsur
- Department of Microbiology, Immunology, and Pathology; College of Veterinary Medicine and Biomedical Sciences; Colorado State University; Fort Collins CO USA
| | - Colleen Duncan
- Department of Microbiology, Immunology, and Pathology; College of Veterinary Medicine and Biomedical Sciences; Colorado State University; Fort Collins CO USA
| | - Kristy Dowers
- Department of Clinical Sciences; College of Veterinary Medicine and Biomedical Sciences; Colorado State University; Fort Collins CO USA
| | - Kelly S. Santangelo
- Department of Microbiology, Immunology, and Pathology; College of Veterinary Medicine and Biomedical Sciences; Colorado State University; Fort Collins CO USA
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10
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Lumboperitoneal shunt for the treatment of leptomeningeal metastasis. Med Hypotheses 2015; 84:506-8. [DOI: 10.1016/j.mehy.2015.02.009] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2014] [Revised: 02/04/2015] [Accepted: 02/19/2015] [Indexed: 01/18/2023]
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Bentley RT. Magnetic resonance imaging diagnosis of brain tumors in dogs. Vet J 2015; 205:204-16. [PMID: 25792181 DOI: 10.1016/j.tvjl.2015.01.025] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2014] [Revised: 01/19/2015] [Accepted: 01/24/2015] [Indexed: 02/02/2023]
Abstract
A great deal of information is now available regarding the range of magnetic resonance imaging (MRI) features of many primary and secondary brain tumors from dogs. In this review, these canine neoplasms are grouped into meningeal masses, ventricular masses, intra-axial enhancing lesions, intra-axial mildly to non-enhancing lesions, and multifocal lesions. For each of these patterns, the major and sporadic neoplastic differential diagnoses are provided, and guidance on how to rank differential diagnoses for each individual patient is presented. The implication of MRI features such as contrast-enhancement, signal intensities and location is discussed. However, the information garnered from MRI must be correlated with all available clinical information and with epidemiological data before creating a differential diagnosis.
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Affiliation(s)
- R Timothy Bentley
- Department of Veterinary Clinical Sciences, Purdue University, West Lafayette, IN 47907-2026, USA.
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Martinez L, Beltran E, Rasotto R, Berlato D, Holloway A. Nasal cryptococcoma causing severe meningitis in a dog in the UK. VETERINARY RECORD CASE REPORTS 2014. [DOI: 10.1136/vetreccr-2014-000151] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Affiliation(s)
| | - Elsa Beltran
- Department of Clinical Science & ServicesRoyal Veterinary CollegeNorth MymmsHatfieldUK
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13
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Marcinowska A, Constantino‐Casas F, Dobson JM. Histiocytic sarcoma in a flat‐coated retriever with central and peripheral nervous system sarcomatosis. VETERINARY RECORD CASE REPORTS 2014. [DOI: 10.1136/vetreccr-2013-000029] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- A. Marcinowska
- Department of Veterinary MedicineUniversity of CambridgeCambridgeUK
| | | | - J. M. Dobson
- Department of Veterinary MedicineUniversity of CambridgeCambridgeUK
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14
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Canine Choroid Plexus Tumor with Intracranial Dissemination Presenting as Multiple Cystic Lesions. Case Rep Vet Med 2013. [DOI: 10.1155/2013/759054] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A Miniature Pinscher developed acute blindness and behavioral changes. On magnetic resonance imaging (MRI), there were multiple small intra-axial cystic lesions, and primary differential diagnoses included primary or metastatic neoplasia and neurocysticercosis. These cystic lesions were subsequently diagnosed histopathologically as disseminated choroid plexus carcinoma. This is only the second documented description of this diagnosis in a dog, but both patients had very similar MRI findings. This patient adds to the literature about the MRI characteristics of choroid plexus tumors and indicates that choroid plexus tumor should be considered as a possible cause of small multifocal intra-axial cystic brain lesions in dogs, regardless of whether a primary intraventricular lesion is visible.
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d'Anjou MA, Carmel ÉN, Blond L, Beauchamp G, Parent J. EFFECT OF ACQUISITION TIME AND CHEMICAL FAT SUPPRESSION ON MENINGEAL ENHANCEMENT ON MR IMAGING IN DOGS. Vet Radiol Ultrasound 2011; 53:11-20. [DOI: 10.1111/j.1740-8261.2011.01864.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Affiliation(s)
- Marc-André d'Anjou
- Companion Animal Research Group; Faculté de Médecine Vétérinaire; Université de Montréal; Saint-Hyacinthe; Québec; Canada
| | - Éric Norman Carmel
- Companion Animal Research Group; Faculté de Médecine Vétérinaire; Université de Montréal; Saint-Hyacinthe; Québec; Canada
| | - Laurent Blond
- Companion Animal Research Group; Faculté de Médecine Vétérinaire; Université de Montréal; Saint-Hyacinthe; Québec; Canada
| | - Guy Beauchamp
- Département de Sciences Cliniques; Département de Pathologie; Faculté de Médecine Vétérinaire; Université de Montréal; Saint-Hyacinthe; Québec; Canada
| | - Joane Parent
- Companion Animal Research Group; Faculté de Médecine Vétérinaire; Université de Montréal; Saint-Hyacinthe; Québec; Canada
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