ABSTRACT
Background: Lipomas are benign soft tissue mesenchymal neoplasms composed of adipose cells and are usually foundin the subcutaneous tissue. Occasionally, lipomas may invade muscles or grow between them, in which case they arecharacterized as infiltrative lipomas. Clinical signs resulting from an intermuscular lipoma compressing peripheral nervesare rarely encountered in dogs. This case report aims to describe the neurological signs, diagnosis, and clinical evaluationof a dog diagnosed with infiltrative lipoma compressing a lumbar spinal nerve root.Case: A 12-year-old neutered male Fox Paulistinha, weighing 10.5 kg, was presented with difficulties in walking for thepast 15 days with no previous history of trauma. On physical examination, the presence of three cutaneous nodules wasnoted in the ventral thoracic region, with onset of one year and slow and progressive growth. A cytological evaluation ofthe nodules was performed, and lipoma was diagnosed. At the neurological examination, the patient presented ambulatoryparaparesis with marked motor deficit and atrophy of the quadriceps muscles of the left pelvic limb. Conscious proprioceptive deficit, the absence of patellar reflex, and diminished withdrawal reflex were observed in the left hind limb, in additionto diffuse pain on epaxial palpation of the lumbar region. Electroneuromyography showed increased insertion activity inthe left gastrocnemius muscle and moderate spontaneous activity (fibrillation). Persistence of 10% was observed in theF-wave study of the left tibial nerve. These findings indicate partial involvement of the roots of the left sciatic-tibial nerve.Magnetic resonance imaging (MRI) showed the presence of a mass measuring 3.18 × 1.04 × 1.4 cm, interspersed withthe paravertebral muscles, and located adjacent to the L2 and L3 spinous processes...(AU)
Subject(s)
Animals , Dogs , Lipoma/complications , Lipoma/veterinary , Radiculopathy/veterinary , Low Back Pain/veterinary , Paraparesis/veterinaryABSTRACT
Background: Lipomas are benign soft tissue mesenchymal neoplasms composed of adipose cells and are usually foundin the subcutaneous tissue. Occasionally, lipomas may invade muscles or grow between them, in which case they arecharacterized as infiltrative lipomas. Clinical signs resulting from an intermuscular lipoma compressing peripheral nervesare rarely encountered in dogs. This case report aims to describe the neurological signs, diagnosis, and clinical evaluationof a dog diagnosed with infiltrative lipoma compressing a lumbar spinal nerve root.Case: A 12-year-old neutered male Fox Paulistinha, weighing 10.5 kg, was presented with difficulties in walking for thepast 15 days with no previous history of trauma. On physical examination, the presence of three cutaneous nodules wasnoted in the ventral thoracic region, with onset of one year and slow and progressive growth. A cytological evaluation ofthe nodules was performed, and lipoma was diagnosed. At the neurological examination, the patient presented ambulatoryparaparesis with marked motor deficit and atrophy of the quadriceps muscles of the left pelvic limb. Conscious proprioceptive deficit, the absence of patellar reflex, and diminished withdrawal reflex were observed in the left hind limb, in additionto diffuse pain on epaxial palpation of the lumbar region. Electroneuromyography showed increased insertion activity inthe left gastrocnemius muscle and moderate spontaneous activity (fibrillation). Persistence of 10% was observed in theF-wave study of the left tibial nerve. These findings indicate partial involvement of the roots of the left sciatic-tibial nerve.Magnetic resonance imaging (MRI) showed the presence of a mass measuring 3.18 × 1.04 × 1.4 cm, interspersed withthe paravertebral muscles, and located adjacent to the L2 and L3 spinous processes...
Subject(s)
Animals , Dogs , Low Back Pain/veterinary , Lipoma/complications , Lipoma/veterinary , Paraparesis/veterinary , Radiculopathy/veterinaryABSTRACT
O objetivo deste estudo foi relatar o uso da ressonância magnética (RM) para avaliar os principais componentes do escroto de búfalos, bem como sua relação com a idade, peso corporal (PC) e níveis plasmáticos de testosterona. Foram avaliados o parênquima testicular (PT), mediastino (MD), cabeça (CE), corpo (CP) e cauda do epidídimo (CD), plexo pampiniforme (PP) e a túnica albugínea (TA) de dez peças anatômicas de búfalos com média de idade de 20,20 meses e peso corporal (PC) de 564kg, obtidas de frigorífico. Os exames de RM foram realizados utilizando um equipamento de baixo campo magnético de 0,25 Tesla e quatro bobinas de radiofrequência. Realizaram-se as sequências: Spin eco T1 (SE-T1), Short TI Inversion-Recovery (STIR), Fast Spin eco T2 (FSE-T2), Gradiente eco T1 (GE-T1), Gradiente eco T2 (GE-T2) e Turbo 3D-T1. Realizou-se a colheita de sangue, durante a sangria dos animais, para avaliação da concentração plasmática de testosterona (ng/mL). Determinou-se o grau de similaridade (%) para avaliação da equiparidade das imagens com a idade, concentração plasmática de testosterona e PC. Para o PT, a maior similaridade foi encontrada entre a idade, a concentração plasmática de testosterona (77,31%) com a GE-T2 e o PC teve maior similaridade (71,07%) com a GE-T1.
The objective of this study was to report the use of magnetic resonance imaging (MRI) to evaluate the main components of the buffalo scrotum, as well as its relation with age, body weight (BW) and plasma testosterone levels. The testicular parenchyma (PT) was evaluated; Mediastinum (MD); (CP) and the tail of the epididymis (CD), pampiniform plexus (PP) and the tunica albuginea (TA) of ten anatomical pieces of buffalo with a mean age of 20,20 months and body weight (CP) Of 564kg, obtained from refrigerator. MRI scans were performed using a 0.25 Tesla low magnetic field equipment and four radiofrequency coils. The following sequences were performed: Spin echo T1 (SE-T1), Short TI Inversion-Recovery (STIR), Fast Spin echo T2 (FSE-T2), E2 gradient (GE-T2), E2 gradient (GE-T1) and Turbo 3D-T1. Blood sampling was also performed during bleeding of the animals to evaluate the plasma concentration of testosterone (ng/mL). The degree of similarity (%) was determined for the evaluation of the image equivalence with age, plasma testosterone concentration and CP. For PT, the highest similarity was found between age and plasma testosterone concentration (77.31%) with GE T2 and PC had greater similarity (71.07%) with GE-T1.
El objetivo de este estudio fue relatar el uso de la resonancia magnética (RM) para evaluar los principales componentes del escroto de búfalos, así como su relación con la edad, peso corporal (PC) y niveles plasmáticos de testosterona. Se evaluó el parénquima testicular (PT), Mediastino (MD), (PP) y la túnica albugínea (TA) de diez piezas anatómicas de búfalos con una media de edad de 20,20 meses y peso corporal (PC). De 564kg, obtenidas de nevera. Los exámenes de RM se realizaron utilizando un equipo de bajo campo magnético de 0,25 Tesla y cuatro bobinas de radiofrecuencia. Se realizaron las secuencias: Spin eco T1 (SE-T1), Short TI Inversion-Recovery (STIR), Fast Spin eco T2 (FSE-T2), Gradiente eco T2 (GE-T1), Gradiente eco T2 (GE-T2) y Turbo 3D-T1. Se realizó también la toma de sangre durante la sangría de los animales para evaluar la concentración plasmática de testosterona (ng/ml). Se determinó el grado de similitud (%) para evaluar la equiparidad de las imágenes con la edad, concentración plasmática de testosterona y PC. Para el PT la mayor similitud fue encontrada entre la edad y la concentración plasmática de testosterona (77,31%) con la GE-T2 y el PC tuvo mayor similitud (71,07%) con la GE-T1. El MD presentó una similitud de 93,70% entre la edad y la concentración plasmática de testosterona con la FSE-T2 y STIR y en relación al PC, el nivel de similitud fue superior en la GE-T2 y el FSE-T2 (60,10%).
Subject(s)
Male , Animals , Buffaloes , Scrotum/anatomy & histology , Scrotum/diagnostic imaging , Body Weights and Measures/veterinary , Magnetic Resonance SpectroscopyABSTRACT
O objetivo deste estudo foi relatar o uso da ressonância magnética (RM) para avaliar os principais componentes do escroto de búfalos, bem como sua relação com a idade, peso corporal (PC) e níveis plasmáticos de testosterona. Foram avaliados o parênquima testicular (PT), mediastino (MD), cabeça (CE), corpo (CP) e cauda do epidídimo (CD), plexo pampiniforme (PP) e a túnica albugínea (TA) de dez peças anatômicas de búfalos com média de idade de 20,20 meses e peso corporal (PC) de 564kg, obtidas de frigorífico. Os exames de RM foram realizados utilizando um equipamento de baixo campo magnético de 0,25 Tesla e quatro bobinas de radiofrequência. Realizaram-se as sequências: Spin eco T1 (SE-T1), Short TI Inversion-Recovery (STIR), Fast Spin eco T2 (FSE-T2), Gradiente eco T1 (GE-T1), Gradiente eco T2 (GE-T2) e Turbo 3D-T1. Realizou-se a colheita de sangue, durante a sangria dos animais, para avaliação da concentração plasmática de testosterona (ng/mL). Determinou-se o grau de similaridade (%) para avaliação da equiparidade das imagens com a idade, concentração plasmática de testosterona e PC. Para o PT, a maior similaridade foi encontrada entre a idade, a concentração plasmática de testosterona (77,31%) com a GE-T2 e o PC teve maior similaridade (71,07%) com a GE-T1. (AU)
The objective of this study was to report the use of magnetic resonance imaging (MRI) to evaluate the main components of the buffalo scrotum, as well as its relation with age, body weight (BW) and plasma testosterone levels. The testicular parenchyma (PT) was evaluated; Mediastinum (MD); (CP) and the tail of the epididymis (CD), pampiniform plexus (PP) and the tunica albuginea (TA) of ten anatomical pieces of buffalo with a mean age of 20,20 months and body weight (CP) Of 564kg, obtained from refrigerator. MRI scans were performed using a 0.25 Tesla low magnetic field equipment and four radiofrequency coils. The following sequences were performed: Spin echo T1 (SE-T1), Short TI Inversion-Recovery (STIR), Fast Spin echo T2 (FSE-T2), E2 gradient (GE-T2), E2 gradient (GE-T1) and Turbo 3D-T1. Blood sampling was also performed during bleeding of the animals to evaluate the plasma concentration of testosterone (ng/mL). The degree of similarity (%) was determined for the evaluation of the image equivalence with age, plasma testosterone concentration and CP. For PT, the highest similarity was found between age and plasma testosterone concentration (77.31%) with GE T2 and PC had greater similarity (71.07%) with GE-T1.(AU)
El objetivo de este estudio fue relatar el uso de la resonancia magnética (RM) para evaluar los principales componentes del escroto de búfalos, así como su relación con la edad, peso corporal (PC) y niveles plasmáticos de testosterona. Se evaluó el parénquima testicular (PT), Mediastino (MD), (PP) y la túnica albugínea (TA) de diez piezas anatómicas de búfalos con una media de edad de 20,20 meses y peso corporal (PC). De 564kg, obtenidas de nevera. Los exámenes de RM se realizaron utilizando un equipo de bajo campo magnético de 0,25 Tesla y cuatro bobinas de radiofrecuencia. Se realizaron las secuencias: Spin eco T1 (SE-T1), Short TI Inversion-Recovery (STIR), Fast Spin eco T2 (FSE-T2), Gradiente eco T2 (GE-T1), Gradiente eco T2 (GE-T2) y Turbo 3D-T1. Se realizó también la toma de sangre durante la sangría de los animales para evaluar la concentración plasmática de testosterona (ng/ml). Se determinó el grado de similitud (%) para evaluar la equiparidad de las imágenes con la edad, concentración plasmática de testosterona y PC. Para el PT la mayor similitud fue encontrada entre la edad y la concentración plasmática de testosterona (77,31%) con la GE-T2 y el PC tuvo mayor similitud (71,07%) con la GE-T1. El MD presentó una similitud de 93,70% entre la edad y la concentración plasmática de testosterona con la FSE-T2 y STIR y en relación al PC, el nivel de similitud fue superior en la GE-T2 y el FSE-T2 (60,10%).(AU)