The size of adrenal tumors has been shown to be a good predictor of malignancy. There is still some controversy about the concordance between radiologic and real pathologic measurements. The aim of this study is to determine the correlation between direct and corrected radiologic computed tomography scan dimensions and the measurements of the resected specimen. A total of 41 adrenal tumors were included. Direct and corrected measurements of the largest diameter were contrasted with the pathologic dimensions. The Linos formula was used for the corrected measurements. Proper statistics were used considering a two-tailed significance level of 0.05. The intraclass correlations using direct and corrected measurements were 0.89 [95% confidence interval (95%CI) 0.81-0.94, p = 0.00001) and 0.90 (95%CI 0.82-0.95, p = 0.00001), respectively. The bivariate analysis using Pearson's correlation between two-dimensional group variables showed r = 0.82 (p < 0.0001) when direct and pathologic measurements were compared and r = 0.83 (p < 0.0001) when the corrected values were compared with the real dimensions. In this study, we demonstrate good correlation between radiologic and pathologic measurements of adrenal tumors. The Linos formula turned out to be significantly more accurate than direct radiologic measurements when means of the groups were compared, whereas when individual correlations were determined the two were similar. The Linos formula and radiologic measurements can be used to determine the proper management of adrenal incidentalomas in individual patients.

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