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Uso de técnica adaptada para cavotomia em cão com feocromocitoma associado a trombo neoplásico / Adapted cavotomy technique for pheochromocytoma associated tumor thrombi in a dog

Andrade, Caroline Ribeiro de; Barboza, Wendell Monteiro; Lessa, Diego Fernando Silva; Malta, Caio Afonso dos Santos; Cabral, Rosa Maria.
Acta Sci. vet.; 48(suppl.1): Pub. 490, 10 mar. 2020. ilus
Artigo em Português | VETINDEX | ID: vti-744819

Resumo

Background: In dogs pheochromocytoma usually compress and invade into the adjacent vessels and structures, whichmay lead to the occurrence of caudal vena caval tumor thrombi. The surgical approach in these cases requires adrenalectomy with caval thrombectomy. Conventionally, tourniquets and partial occlusion clamp are used to reduce intraoperativeblood loss, but in dogs with a large thrombus associated to a great local tumor invasion, the traditional technique may behindered. The aim of this study was to report the use of a purse-string suture during venotomy of the caudal vena cava forthrombectomy, as an alternative to tourniquet and partial occlusion clamp.Case: An 11-year-old male Daschound breed dog, was referred for evaluation because of the appearance of small blackenednodules in the ventral abdomen. During a search for metastatic lesions with abdominal ultrasound, the right adrenal wasidentified with significant volume increase, and presence of tumor-associate circular formation that appeared to invade thecaudal vena cava, suggestive of neoplastic invasion or thrombus. Abdominal computed tomography showed caudal venacava in its hepatic portion presenting considerable increase in diameter, with caudal dilation and presence of hypoattenuatingmaterial in its lumen. Right adrenal gland with rounded appearance and regular borders, heterogeneous parenchyma andjuxtaposed caudal vena cava suggesting invasion of this, confirming the sonographic findings. During exploratory celiotomy,adherence of the adrenal mass to the right renal vessels and invasion of the caudal vena cava were observed, leading to theneed of nephrectomy and venotomy for thrombectomy. To perform the venotomy, a Rumel tourniquet was placed looselyaround the vena cava only caudal to the invasion point of the tumor thrombus, cranially, tourniquet application was notpossible due to the presence of a large thrombus extending into the intrahepatic cava...(AU)
Biblioteca responsável: BR68.1
Localização: BR68.1