Differential Diagnosis of Complex Cystic Renal Mass Using Multiphase Computerized Tomography

Abstract

In cases of complex cystic renal masses diagnostic accuracy can be improved to differentiate renal cell carcinoma by combining Bosniak class and enhancement differences measured on multiphase computerized tomography between precontrast and maximal enhancement phases. This would help determine the need for and the method of surgical treatment.

CUA guideline on the management of cystic renal lesions

“…11,12,15,[23][24][25][26][27]31,33,34,39,40,42,43,47,51,59 However, the literature is thought to overestimate the true risk of malignancy among category II cysts, as the majority were managed conservatively or had features that made them too complex to be categorized as a Bosniak II cyst. 6,12,26,29,31,32,35,38,59 Importantly, even if malignant, most behave in a relatively benign fashion.…”

Unilateral Renal Cystic Disease : A Case Report

“…Segmental dysplasia is similar to multicystic dysplastic kidney but is segmental in distribution. 6,7 Gross hydronephrosis can cause severe thinning of the renal parenchyma, which mimics multiple cysts especially on ultrasound, however continuity of the calyces can be traced to the renal pelvis, the pelvis is also dilated. There is severe cortical thinning.…”

Classificação de Bosniak para cistos renais complexos: histórico e análise crítica

“…Several studies, most retrospective, have evaluated the effectiveness of the Bosniak classification (11-15) . A recent metaanalysis that included nine studies with at least 30 cases each (16) showed that the inclusion of the category II-F led to a reduction of the number of cases included in category III and, consequently, to a decrease in the number of surgical exploration of benign lesions.…”