Local behavior and lymph node metastases of Wilms' tumor: accuracy of computed tomography

Radiologia Brasileira

Eduardo Just Da Costa E Silva¹  Giselia Alves Pontes Da Silva¹ 

关键词: Computed tomography;    Wilms' tumor;    Staging;    Tomografia computadorizada;    Tumor de Wilms;    Estadiamento;   

DOI  :  10.1590/S0100-39842014000100007

来源: SciELO

【 摘 要 】

ObjectiveTo evaluate the accuracy of computed tomography for local and lymph node staging of Wilms' tumor.Materials and MethodsEach case of Wilms' tumor was evaluated for the presence of abdominal lymph nodes by a radiologist. Signs of capsule and adjacent organ invasion were analyzed. Surgical and histopathological results were taken as the gold standard.ResultsSensitivity was 100% for both mesenteric and retroperitoneal lymph nodes detection, and specificity was, respectively, 12% and 33%, with positive predictive value of 8% and 11% and negative predictive value of 100%. Signs of capsular invasion presented sensitivity of 87%, specificity of 77%, positive predictive value of 63% and negative predictive value of 93%. Signs of adjacent organ invasion presented sensitivity of 100%, specificity of 78%, positive predictive value of 37% and negative predictive value of 100%.ConclusionComputed tomography tumor showed low specificity and low positive predictive value in the detection of lymph node dissemination. The absence of detectable lymph nodes makes their presence unlikely, and likewise regarding the evaluation of local behavior of tumors.

【 授权许可】

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