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Tumor maligno da bainha de nervo periférico em rim esquerdo de canino da raça whippet / Malignant tumor of the peripheral nerve sheath in a left whippet canine kidney

Freitas, Rosemar de Almeida; Santos Filho, Mário dos; Campos, Simone Neves de; Corrêa, Luciana Martins; Carvalho, Wagner Tavares Silveira de; Moraes, Matheus Abreu de; Gomes, Viviane Horta; Cotias Netto, Carlos Eduardo.
Acta sci. vet. (Online); 48(suppl.1): Pub. 544, 3 nov. 2020. ilus
Artigo em Português | VETINDEX | ID: vti-765370


Background: Malignant tumors of the peripheral nerve sheath (MTPNS`s) are considered rare tumors that can affect soft tissues. In dogs, the occurrence is more common in the nerves of the brachial plexus, but they can affect the lumbosacral plexus and cranial nerves. Rarely, they can affect spinal nerves and nerve roots and the urinary tract, especially in kidneys. The present report aims to describe a clinical case of a 10-year-old sterilized female whippet, who had a history of persistent hematuria for months, with subsequent diagnosis of MTPNS as the cause of hematuria. Case: The patient came for evaluation with a history of persistent hematuria. Evaluation of abnormal elements and sedimentation, showed the description of numerous red blood cells and the presence of proteinuria. The abdominal ultrasound revealed a left kidney with enlarged dimensions, irregular contour, loss of corticomedullary definition. The urinary vesicle showed an increase in cellularity. On physical examination, the patient had vital parameters within the normal range. A Snap 4DX® Plus exam was requested, which showed a reaction for Dirofilaria immitis. With this result, it was initially suspected that renal vasculitis. After starting the treatment, the patient started to present normal colored urine. However, after the end of this period, the patient returned to hematuria. After six months of treatment and without justification for the permanence of hematuria, urethrocystoscopy was indicated, which revealed a urinary vesicle with a hemorrhagic focus. A urinary bladder wall biopsy was performed, which showed no changes. Four months after the urethrocystoscopic exam, the patient had her first azotemic crisis. This time that the left renal neoformation observed on ultrasound examination. With the discovery of the origin of the problem, a therapeutic approach could be instituted, consisting of the left...(AU)
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Localização: BR68.1