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Objective: To investigate a possible relationship between abdominal adiposity parameters and the presence of renal cell carcinoma (RCC), and between these adiposity parameters and various histopathological tumor findings. Material and Methods: A total of 48 patients (31 males and 17 females, mean age: 60.17±13.39 years) with RCC and 50 control subjects (32 males and 18 females, mean age: 60.26±7.71 years) were enrolled. The medical data and the abdominopelvic computed tomography (CT) examinations of the study groups were retrospectively reviewed. The abdominal adiposity parameters, including visceral adipose tissue (VAT) volume, subcutaneous adipose tissue (SAT) volume, total adipose tissue (TAT) volume, visceral adipose tissue index (VATI), subcutaneous adipose tissue index (SATI), and VAT-to-SAT ratio, were calculated using specialized software. We also noted histopathological features of the tumors. Results: We found significantly higher SAT volume and SATI in the RCC group in comparison with the control group (p=0.024 and p = 0.001, respectively). The VAT volume and VATI were significantly lower in the patient group, compared to the control group (p = 0.001 for both). There was no statistically significant relationship between VAT-to-SAT ratio and the presence of RCC. No statistically significant relationship between abdominal adiposity parameters and histopathological tumor features was detected (p > 0.05). Conclusion: We designed a volumetric study of all slices of abdominopelvic CT examination by using specialized software. As far as we know, this study is the first volumetric study to investigate those relationships. Volumetric adipose tissue measurements may be more accurate than area measurements and can easily be performed during abdominopelvic CT examination, which is the routine imaging modality for RCC patients.

The Relationship Between Abdominal Adiposity Parameters and Renal Cell Carcinoma: A Volumetric Study Using All Computed Tomography Slices