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Schippers PA, Meyer-Wilmes J, Langenmayer MC, Partale K. [Lameness and swelling of the metatarsus in a Saluki - Could it be an arteriovenous fistula?]. TIERARZTLICHE PRAXIS. AUSGABE K, KLEINTIERE/HEIMTIERE 2024; 52:238-242. [PMID: 39173652 DOI: 10.1055/a-2364-2657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/24/2024]
Abstract
A 12-year-old Saluki was presented with acute lameness and plantar swelling of the right metatarsus following an episode of free running. Radiographs showed soft tissue swelling only, the involved bone and joint structures were unremarkable. The lesion recurred several months later. Ultrasonographic imaging of the lesion revealed a well-vascularized cavernous structure. Subsequent surgical removal and histopathological examination of the structure raised the initial suspicion of an arteriovenous fistula, which was then confirmed histologically following a second surgical removal of another recurrence. The purpose of this case report is to illustrate the potential complexity of what initially appears to be a simple lameness. At the same time, attention is focused on the possibility that arteriovenous fistulas may tend to recur.
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Affiliation(s)
| | - Jana Meyer-Wilmes
- Tierärztliche Gemeinschaftspraxis Dr. E. & J. Meyer-Wilmes, Harsewinkel
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Delgado-Bonet P, Tomeo-Martín BD, Delgado-Bonet B, Sardón-Ruiz D, Torrado-Carvajal A, Mateo I, Perisé-Barrios AJ. Intracranial Virotherapy for a Canine Hemangioma. Int J Mol Sci 2022; 23:ijms231911677. [PMID: 36232978 PMCID: PMC9569716 DOI: 10.3390/ijms231911677] [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: 08/31/2022] [Accepted: 09/29/2022] [Indexed: 11/18/2022] Open
Abstract
Intracranial hemangiomas are rare neoplastic lesions in dogs that usually appear with life-threatening symptoms. The treatment of choice is tumor resection; however, complete resection is rarely achieved. The patient's prognosis therefore usually worsens due to tumor progression, and adjuvant treatments are required to control the disease. Oncolytic viruses are an innovative approach that lyses the tumor cells and induces immune responses. Here, we report the intratumoral inoculation of ICOCAV15 (an oncolytic adenovirus) in a canine intracranial hemangioma, as adjuvant treatment for incomplete tumor resection. The canine patient showed no side effects, and the tumor volume decreased over the 12 months after the treatment, as measured by magnetic resonance imaging using volumetric criteria. When progressive disease was detected at month 18, a new dose of ICOCAV15 was administered. The patient died 31.9 months after the first inoculation of the oncolytic adenovirus. Furthermore, tumor-infiltrated immune cells increased in number after the viral administrations, suggesting tumor microenvironment activation. The increased number of infiltrated immune cells, the long survival time and the absence of side effects suggest that ICOCAV15 could be a safe and effective treatment and should be further explored as a novel therapy for canine hemangiomas.
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Affiliation(s)
- Pablo Delgado-Bonet
- Biomedical Research Unit (UIB-UAX), Universidad Alfonso X el Sabio, 28691 Madrid, Spain
| | | | - Blanca Delgado-Bonet
- Medical Image Analysis and Biometry Laboratory, Universidad Rey Juan Carlos, 28933 Madrid, Spain
| | - David Sardón-Ruiz
- Department of Veterinary Pathology, Universidad Alfonso X el Sabio, 28691 Madrid, Spain
| | - Angel Torrado-Carvajal
- Medical Image Analysis and Biometry Laboratory, Universidad Rey Juan Carlos, 28933 Madrid, Spain
| | - Isidro Mateo
- Neurology Service, Veterinary Hospital VETSIA, 28914 Madrid, Spain
- Neurology Service, Veterinary Clinical Hospital, Universidad Alfonso X el Sabio, 28691 Madrid, Spain
| | - Ana Judith Perisé-Barrios
- Biomedical Research Unit (UIB-UAX), Universidad Alfonso X el Sabio, 28691 Madrid, Spain
- Correspondence: ; Tel.: +34-918105319
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Marr J, Miranda IC, Miller AD, Summers BA. A Review of Proliferative Vascular Disorders of the Central Nervous System of Animals. Vet Pathol 2020; 58:864-880. [PMID: 33302811 DOI: 10.1177/0300985820980707] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
In disease, blood vessel proliferation has many salient roles including in inflammation, when granulation tissue fills superficial defects, or in the recanalization of an occluded blood vessel. Sometimes angiogenesis goes awry-granulation can be exuberant, and plexiform proliferation of vascular components can contribute to pulmonary hypertension. This review focuses on the diverse manifestations of pathologic vascular overgrowth that occur in the brain, spinal cord, and meninges of animals from birth until old age. Entities discussed include systemic reactive angioendotheliomatosis in which glomeruloid vascular proliferations are encountered in various organs including the central nervous system (CNS). The triad of CNS vascular malformations, hamartomas, and benign vascular proliferations are an especially fraught category in which terminology overlap and the microscopic similarity of various disorders makes diagnostic classification incredibly challenging. Pathologists commonly take refuge in "CNS vascular hamartoma" despite the lack of any unique histopathologic features and we recommend that this diagnostic category be abandoned. Malformative lesions that are often confusing and have similar features; the conditions include arteriovenous malformation, cavernous angioma, venous angioma, and capillary telangiectases. Meningioangiomatosis, a benign meningovascular proliferation with dual components, is a unique entity seen most commonly in young dogs. Last, accepted neoplastic conditions range from lower-grade locally acquired growths like hemangioblastoma (a tumor of mysterious interstitial stromal cells encountered in the setting of abundant capillary vasculature proliferation), the rare hemangioendothelioma, and the highly malignant and invariably multifocal metastatic hemangiosarcoma. Additionally, this review draws on the comparative medical literature for further insights into this problematic topic in pathology.
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Yanke AB, Miller MA, Fulkerson CV, Bohn K, Bentley RT. Remission after complete excision of an intramedullary hemangioma with an identifiable tumor plane in a dog. Vet Surg 2019; 48:1507-1513. [PMID: 31179565 DOI: 10.1111/vsu.13238] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2018] [Revised: 02/04/2019] [Accepted: 04/27/2019] [Indexed: 11/28/2022]
Abstract
OBJECTIVE To describe the use of an identifiable tumor plane (ITP) during myelotomy to excise an intramedullary hemangioma in a dog and report the outcome. STUDY DESIGN Case report. ANIMALS One 5.5-year-old 42.9-kg spayed female Leonberger dog. METHODS Clinical signs included progressive proprioceptive deficits of both pelvic limbs. Magnetic resonance imaging was consistent with a dorsal intramedullary mass at L3-L4. A laminectomy of the third and fourth lumbar vertebrae provided access for dorsal myelotomy. A clear surgical ITP was identified between the intramedullary mass and the spinal cord facilitating complete surgical resection. RESULTS Histopathological examination was consistent with a hemangioma. Postoperative MRI was consistent with complete excision of the mass. No evidence of recurrence was found by MRI at 3 months and at 22 months after surgery. Mild proprioceptive deficits persisted in the right pelvic limb. CONCLUSION A clear ITP was present, and gross-total resection (GTR) was achieved without significant morbidity. Persistent clinical remission resulted from surgery as the sole therapy. CLINICAL SIGNIFICANCE For an intramedullary tumor, GTR is the absence of visible tumor on intraoperative inspection combined with the absence of intramedullary contrast enhancement on postoperative MRI. When an ITP is present, GTR and resultant long-term remission may be more likely.
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Affiliation(s)
- Amy B Yanke
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Purdue University, West Lafayette, Indiana.,Department of Clinical Sciences, College of Veterinary Medicine, Auburn University, Auburn, Alabama
| | - Margaret A Miller
- Department of Comparative Pathobiology, College of Veterinary Medicine, Purdue University, West Lafayette, Indiana
| | - Caroline V Fulkerson
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Purdue University, West Lafayette, Indiana
| | - Kendra Bohn
- Neurology Service, Pittsburgh Veterinary Specialty & Emergency Center, Pittsburgh, Pennsylvania
| | - R Timothy Bentley
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Purdue University, West Lafayette, Indiana
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MacKillop E, Olby NJ, Linder KE, Brown TT. Intramedullary Cavernous Malformation of the Spinal Cord in Two Dogs. Vet Pathol 2016; 44:528-32. [PMID: 17606517 DOI: 10.1354/vp.44-4-528] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Intramedullary cavernous malformations (CVMs) of the spinal cord were diagnosed in 2 adult dogs that presented for paraparesis. An intramedullary spinal cord lesion was identified on a myelogram in the first dog, and expansion of the vertebral canal was evident on radiographs in the second. Extensive intraparenchymal hemorrhage was found on gross postmortem examination in both dogs, and a distinct lobulated intramedullary mass was evident in the second dog. Microscopically, both lesions were composed of dilated, thin-walled vascular channels with little-to-no intervening neural parenchyma. Both dogs had evidence of channel thrombosis along with perilesional hemorrhage and hemosiderin accumulation. The second dog had additional degenerative changes, including thickened fibrous channel walls with hyalinization, foci of mineralization, and occasional tongues of entrapped gliotic neuropil. CVMs appear to be an uncommon cause of both acute and chronic spinal cord disease in the dog.
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Affiliation(s)
- E MacKillop
- North Carolina State University College of Veterinary Medicine, Raleigh, NC 27606-1428, USA
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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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Miller AG, Halsey CH, Miller MD, Bohn AA. What is your diagnosis? Intracranial mass in a dog. Vet Clin Pathol 2011; 40:563-564. [PMID: 22093113 DOI: 10.1111/j.1939-165x.2011.00367.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2010] [Revised: 01/14/2011] [Accepted: 02/03/2011] [Indexed: 11/30/2022]
Affiliation(s)
- Amy G Miller
- Departments of Microbiology, Immunology and Pathology
| | | | - Matthew D Miller
- Veterinary Clinical Sciences, Colorado State University, Fort Collins, CO, USA
| | - Andrea A Bohn
- Departments of Microbiology, Immunology and Pathology
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MacKillop E. Magnetic resonance imaging of intracranial malformations in dogs and cats. Vet Radiol Ultrasound 2011; 52:S42-51. [PMID: 21392155 DOI: 10.1111/j.1740-8261.2010.01784.x] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
Intracranial malformations may occur because of an inherent developmental defect or secondary to in utero injury to the brain with subsequent hypoplasia and atrophy. They can cause neurologic deficits in growing animals, although some anomalies may not produce clinical signs until adulthood. Malformations of the brain include hydrocephalus, hydranencephaly/porencephaly, holoprosencephaly, corpus callosum agenesis/dysgenesis, lissencephaly, polymicrogyria, meningoencephalocele, intracranial cysts, cerebellar malformations, and hamartomas. These conditions are defined and reviewed with an emphasis on their features in magnetic resonance images.
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Affiliation(s)
- Edward MacKillop
- Pittsburgh Veterinary Specialty and Emergency Center (PVS-EC), Pittsburgh, PA 15237, USA.
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EICHELBERGER BUNITAM, KRAFT SUSANL, HALSEY CHARLESHC, PARK RICHARDD, MILLER MATTHEWD, KLOPP LISA. IMAGING DIAGNOSIS-MAGNETIC RESONANCE IMAGING FINDINGS OF PRIMARY CEREBRAL HEMANGIOMA. Vet Radiol Ultrasound 2010; 52:188-91. [DOI: 10.1111/j.1740-8261.2010.01766.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Hecht S, Adams WH. MRI of Brain Disease in Veterinary Patients Part 2: Acquired Brain Disorders. Vet Clin North Am Small Anim Pract 2010; 40:39-63. [DOI: 10.1016/j.cvsm.2009.09.006] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Alexander K, Huneault L, Foster R, d'Anjou MA. Magnetic resonance imaging and marsupialization of a hemorrhagic intramedullary vascular anomaly in the cervical portion of the spinal cord of a dog. J Am Vet Med Assoc 2008; 232:399-404. [DOI: 10.2460/javma.232.3.399] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Sager M, Assheuer J, Trümmler H, Moormann K. Contrast-enhanced magnetic resonance angiography (CE-MRA) of intra- and extra-cranial vessels in dogs. Vet J 2007; 179:92-100. [PMID: 17967553 DOI: 10.1016/j.tvjl.2007.08.032] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2005] [Revised: 08/08/2007] [Accepted: 08/29/2007] [Indexed: 11/25/2022]
Abstract
Until recently intra- and extra-cranial vessels in dogs have been imaged using conventional X-ray or digital subtraction angiography. As both of these methods are surgically demanding and involve the use of complex equipment with potential risks for the animal, they are now mainly used in experimental work. In this study, a method for delineating the intra- and extra-cranial vessels of dogs using contrast-enhanced magnetic resonance angiography (CE-MRA) has been examined. The MR images were acquired on a 1.5-T scanner after a bolus injection of gadolinium contrast medium. CE-MRA showed most of the major intra- and extra-cranial arteries and veins as well as most venous sinuses and plexuses of the brain. Difficulties may arise in differentiating between minor arterial and venous vessels as well as in the measurement of vessel diameter. More frequent use of this diagnostic method in clinical cases will indicate whether MRA of the head and brain is of as much use in veterinary medicine as it has become in human medicine. There is certainly potential value in detecting rare conditions in animals such as aneurysms and vascular malformations, as well as in examining vessels feeding intracranial masses and the investigation of cerebrovascular accidents.
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Affiliation(s)
- M Sager
- Medical School, Heinrich-Heine-University, Moorenstrasse 5, 40225 Duesseldorf, Germany.
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