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1.
Acta sci. vet. (Online) ; 46(supl): 1-6, 2018. ilus
Artigo em Português | VETINDEX | ID: vti-734055

Resumo

Background: Spinal neoplasms are classified into extradural, intradural/extramedullary or intramedullary. Intradural/extramedullary tumors include meningiomas and nerve sheath tumors, which arise from meninges or peripheral nerves around the spinal cord. Clinical signs are related to dysfunction of the involved nerve and include pain, nerve root signature and atrophy. Osteochondromas are benign tumors located within the bone, on its surface or in extra-osseous regions, when they are classified as soft tissue osteochondoma. The aim of this study is to describe a case of an osteochondroma in a nervous root of the cauda equina in a dog, whose surgical resection allowed the resolution of the clinical signs.Case: A 12-year-old, male, Labrador Retriever dog, was presented with a 40-day history of progressive, painful, pelvic limb paresis, with no improvement when treated with analgesics and acupuncture. Neurological abnormalities included paraparesis, sometimes worse in the left pelvic limb, that was carried flexed at the level of the stifle, hindlimb atrophy, decreased interdigital reflexes and pain in the lumbar spinal region, mainly over L6 vertebra. Results of blood count and serum biochemical analysis were unremarkable. Computed tomography (CT) of the lumbosacral area was performed and the evaluation of images in transverse and reconstructed dorsal and sagittal planes allowed the visualization of a hyperattenuating and calcified round structure with 8 mm x 6 mm, in the left side of vertebral canal, at the level of caudal epiphysis of L6. Lumbosacral (L7-S1) CT abnormalities, as subchondral sclerosis, mild disc margin bulging, spondylosis deformans and foraminal proliferation were also observed but were considered clinically insignificant.[...](AU)


Assuntos
Animais , Masculino , Cães , Osteocondroma/diagnóstico por imagem , Osteocondroma/cirurgia , Osteocondroma/veterinária , Cauda Equina/patologia , Cauda Equina/cirurgia , Neoplasias do Sistema Nervoso Periférico/veterinária
2.
Acta sci. vet. (Impr.) ; 46(supl): 1-6, 2018. ilus
Artigo em Português | VETINDEX | ID: biblio-1457994

Resumo

Background: Spinal neoplasms are classified into extradural, intradural/extramedullary or intramedullary. Intradural/extramedullary tumors include meningiomas and nerve sheath tumors, which arise from meninges or peripheral nerves around the spinal cord. Clinical signs are related to dysfunction of the involved nerve and include pain, nerve root signature and atrophy. Osteochondromas are benign tumors located within the bone, on its surface or in extra-osseous regions, when they are classified as soft tissue osteochondoma. The aim of this study is to describe a case of an osteochondroma in a nervous root of the cauda equina in a dog, whose surgical resection allowed the resolution of the clinical signs.Case: A 12-year-old, male, Labrador Retriever dog, was presented with a 40-day history of progressive, painful, pelvic limb paresis, with no improvement when treated with analgesics and acupuncture. Neurological abnormalities included paraparesis, sometimes worse in the left pelvic limb, that was carried flexed at the level of the stifle, hindlimb atrophy, decreased interdigital reflexes and pain in the lumbar spinal region, mainly over L6 vertebra. Results of blood count and serum biochemical analysis were unremarkable. Computed tomography (CT) of the lumbosacral area was performed and the evaluation of images in transverse and reconstructed dorsal and sagittal planes allowed the visualization of a hyperattenuating and calcified round structure with 8 mm x 6 mm, in the left side of vertebral canal, at the level of caudal epiphysis of L6. Lumbosacral (L7-S1) CT abnormalities, as subchondral sclerosis, mild disc margin bulging, spondylosis deformans and foraminal proliferation were also observed but were considered clinically insignificant.[...]


Assuntos
Masculino , Animais , Cães , Cauda Equina/cirurgia , Cauda Equina/patologia , Neoplasias do Sistema Nervoso Periférico/veterinária , Osteocondroma/cirurgia , Osteocondroma/diagnóstico por imagem , Osteocondroma/veterinária
3.
Acta sci. vet. (Impr.) ; 44(supl): 01-06, 2016. ilus
Artigo em Inglês | VETINDEX | ID: biblio-1457517

Resumo

Background: Canine transmissible venereal tumor (TVT) is a round-cell tumor of dogs, which occurs by cell transplantation. It is usually located on the external genitalia, and is transmitted by coitus. It may occasionally be acquired by sniffing or licking the genitalia of an affected animal. Lesions may be present in the other parts of the body, such as the skin, rectum, and nasal or oral cavities. Metastasis of the TVT is uncommon, mainly occurring in immunocompromised dogs. It may affect organs such as the liver, spleen, kidney, lung, and musculature, and rarely, may be detected in the central nervous system. In this report, we describe the occurrence of a TVT causing spinal cord compression in a dog, and the results of its treatment with hemilaminectomy and chemotherapy. Case: A six-year-old male Dalmatian dog was referred to a veterinary teaching hospital with nonspecific abdominal pain. Laboratory examination showed no abnormalities; survey radiography revealed a moderate fecal retention. The dog received painkillers and dietary guidelines. However, the patient was brought again to the veterinary teaching hospital nine days later with paraplegia, worse in the left limb than in the right, but with normal nociception. There was a cutaneous trunci reflex cut-off at the T10 vertebra, also worse on left side than on right, along with spinal thoracolumbar hyperesthesia. During [...]


Assuntos
Masculino , Animais , Cães , Compressão da Medula Espinal/veterinária , Tumores Venéreos Veterinários/cirurgia , Tumores Venéreos Veterinários/tratamento farmacológico , Neoplasias da Medula Espinal/veterinária , Vincristina/uso terapêutico
4.
Acta sci. vet. (Online) ; 44(supl): 01-06, 2016. ilus
Artigo em Inglês | VETINDEX | ID: vti-12039

Resumo

Background: Canine transmissible venereal tumor (TVT) is a round-cell tumor of dogs, which occurs by cell transplantation. It is usually located on the external genitalia, and is transmitted by coitus. It may occasionally be acquired by sniffing or licking the genitalia of an affected animal. Lesions may be present in the other parts of the body, such as the skin, rectum, and nasal or oral cavities. Metastasis of the TVT is uncommon, mainly occurring in immunocompromised dogs. It may affect organs such as the liver, spleen, kidney, lung, and musculature, and rarely, may be detected in the central nervous system. In this report, we describe the occurrence of a TVT causing spinal cord compression in a dog, and the results of its treatment with hemilaminectomy and chemotherapy. Case: A six-year-old male Dalmatian dog was referred to a veterinary teaching hospital with nonspecific abdominal pain. Laboratory examination showed no abnormalities; survey radiography revealed a moderate fecal retention. The dog received painkillers and dietary guidelines. However, the patient was brought again to the veterinary teaching hospital nine days later with paraplegia, worse in the left limb than in the right, but with normal nociception. There was a cutaneous trunci reflex cut-off at the T10 vertebra, also worse on left side than on right, along with spinal thoracolumbar hyperesthesia. During [...](AU)


Assuntos
Animais , Masculino , Cães , Tumores Venéreos Veterinários/tratamento farmacológico , Tumores Venéreos Veterinários/cirurgia , Compressão da Medula Espinal/veterinária , Vincristina/uso terapêutico , /veterinária , Neoplasias da Medula Espinal/veterinária
5.
Acta sci. vet. (Online) ; 44: 01-10, 2016. ilus, tab
Artigo em Inglês | VETINDEX | ID: vti-722739

Resumo

Background: Various diseases can cause spinal cord disorders in dogs including neoplasia of the nervous system, which are more common in mature and older animals. Some breeds, as brachycephalics, are more predisposed for certain types of tumors. Spinal neoplasia can be categorized as primary or secondary tumors, and still can be grouped in extradural, intradural/extramedullary or intramedullary. The aim of this study was to investigate the signalment, neurological syndrome, type and source of the mass, presence of metastases, and clinical outcomes in 28 dogs diagnosed with spinal tumors. Materials, Methods & Results: This study included 28 dogs, and in 20 cases, spinal neoplasia was confirmed by necropsy, biopsy, histopathology, and immunohistochemistry. In the other eight animals, the presumptive diagnosis was based on clinical and neurological signs and by observing changes in plain radiographs of the spine, chest radiographs, and myelography. The location of the lesion was established as cervical, cervicothoracic, thoracolumbar, or lumbosacral, and the lesion was determined to be multifocal when clinical signs appeared in more than one location. Spinal cord injury was additionally classified as unilateral, bilateral, symmetrical, or asymmetrical. The following complementary examinations were performed based on the clinical suspicion, indications, and availability of the [...](AU)


Assuntos
Animais , Cães , Neoplasias da Medula Espinal/veterinária , Metástase Neoplásica/diagnóstico , Medula Espinal/patologia , Biópsia/veterinária
6.
Acta sci. vet. (Impr.) ; 44: 01-10, 2016. ilus, tab
Artigo em Inglês | VETINDEX | ID: biblio-1457469

Resumo

Background: Various diseases can cause spinal cord disorders in dogs including neoplasia of the nervous system, which are more common in mature and older animals. Some breeds, as brachycephalics, are more predisposed for certain types of tumors. Spinal neoplasia can be categorized as primary or secondary tumors, and still can be grouped in extradural, intradural/extramedullary or intramedullary. The aim of this study was to investigate the signalment, neurological syndrome, type and source of the mass, presence of metastases, and clinical outcomes in 28 dogs diagnosed with spinal tumors. Materials, Methods & Results: This study included 28 dogs, and in 20 cases, spinal neoplasia was confirmed by necropsy, biopsy, histopathology, and immunohistochemistry. In the other eight animals, the presumptive diagnosis was based on clinical and neurological signs and by observing changes in plain radiographs of the spine, chest radiographs, and myelography. The location of the lesion was established as cervical, cervicothoracic, thoracolumbar, or lumbosacral, and the lesion was determined to be multifocal when clinical signs appeared in more than one location. Spinal cord injury was additionally classified as unilateral, bilateral, symmetrical, or asymmetrical. The following complementary examinations were performed based on the clinical suspicion, indications, and availability of the [...]


Assuntos
Animais , Cães , Metástase Neoplásica/diagnóstico , Neoplasias da Medula Espinal/veterinária , Biópsia/veterinária , Medula Espinal/patologia
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