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Int. braz. j. urol ; 42(3): 456-463, tab, graf
Artigo em Inglês | LILACS | ID: lil-785731

RESUMO

ABSTRACT Purpose To describe our initial experience with radiofrequency ablation (RFA) of Bosniak IV renal cysts. Materials and Methods From 2010 to 2014, 154 renal tumor cases were treated with percutaneous thermal ablation, of which 10 cases (6.4%) from nine patients were complex renal cysts and were treated with radiofrequency ablation. Results All complex cysts were classified as Bosniak IV (four women and five men; mean age: 63.6 yrs, range: 33–83 years). One patient had a single kidney. Lesion size ranged from 1.5 to 4.1cm (mean: 2.5cm) and biopsy was performed on four cysts immediately before the procedure, all of which were malignant (two clear cell and two papillary carcinoma). Mean volume reduction of complex cysts was 25% (range: 10–40%). No patients required retreatment with RFA and no immediate or late complications were observed. The follow-up of Bosniak IV cysts had a median of 27 months (interquartile range [IQR], 23 to 38) and no recurrence or significant loss of renal function were observed. Conclusions Mid-term follow-up of the cases in our database suggests that image-guided percutaneous RFA can treat Bosniak IV cysts with very low complication rates and satisfactorily maintain renal function.


Assuntos
Humanos , Masculino , Feminino , Adulto , Idoso , Idoso de 80 Anos ou mais , Ablação por Cateter/métodos , Doenças Renais Císticas/cirurgia , Doenças Renais Císticas/patologia , Complicações Pós-Operatórias , Biópsia , Imageamento por Ressonância Magnética , Tomografia Computadorizada por Raios X , Estudos de Viabilidade , Reprodutibilidade dos Testes , Estudos Retrospectivos , Fatores de Risco , Resultado do Tratamento , Cirurgia Assistida por Computador/métodos , Doenças Renais Císticas/diagnóstico por imagem , Neoplasias Renais/cirurgia , Pessoa de Meia-Idade
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