Uyen N Hoang1,2,3, S Mojdeh Mirmomen4, Osorio Meirelles5, Jianhua Yao4, Maria Merino6, Adam Metwalli6, W Marston Linehan5, Ashkan A Malayeri4,6. 1. Clinical Center, National Institutes of Health, Bethesda, MD, 20892, USA. uyen.n.hoang@gmail.com. 2. Urologic Oncology Branch, National Cancer Institute, Bethesda, MD, 20892, USA. uyen.n.hoang@gmail.com. 3. , 10 Center Dr, Bethesda, MD, 20814, USA. uyen.n.hoang@gmail.com. 4. Clinical Center, National Institutes of Health, Bethesda, MD, 20892, USA. 5. Neuroepidemiology Section, National Institute of Aging, Bethesda, MD, 20892, USA. 6. Urologic Oncology Branch, National Cancer Institute, Bethesda, MD, 20892, USA.
Abstract
PURPOSE: This study seeks to evaluate the use of quantitative texture parameters extracted from multiphasic contrast-enhanced magnetic resonance (MR) imaging in differentiating between benign and malignant masses (oncocytoma vs. clear cell and papillary RCC) and between common subtypes of renal cell carcinoma (clear cell vs. papillary RCC) in small renal masses (< 4 cm). METHOD: One-hundred and forty-two renal lesions (90 clear cell and 22 papillary RCCs; 30 oncocytomas) were identified in a cohort of 41 patients (18 men, 23 women: mean age, 52.8 ± 14.4 years) who underwent preoperative multiphasic contrast-enhanced MR with four phases (unenhanced, arterial, venous, and delayed) between 2015 and 2016. In this study, texture features were extracted from entire cross-sectional tumoral region in three consecutive slices containing the largest cross-sectional area from each of the four phases. The change in imaging feature between precontrast imaging and each postcontrast phase was calculated. Data dimension reduction and feature selection were performed by conducting (1) pairwise Wilcoxon rank test followed by modified false discovery rate adjustment, and (2) Lasso regression. Multivariate modeling incorporating the selected features was performed using random forest classification method. RESULTS: Histogram imaging features were informative variables in differentiating between benign and malignant masses, while textures imaging features were of added value in differentiating between subtypes of RCCs. Papillary RCCs were distinguished from clear cell RCCs (sensitivity 65.5%, specificity 88%, and accuracy 77.9%), oncocytomas from clear cell RCCs (sensitivity 67.3%, specificity 88.9%, and accuracy 79.3%), and oncocytomas from papillary and clear cell RCCs (sensitivity 64.7%, specificity 85.9%, and accuracy 77.9%). CONCLUSIONS: A combination of histogram and texture imaging features on multiphasic MR can help differentiate histologic cell types in common small renal masses (< 4 cm).
PURPOSE: This study seeks to evaluate the use of quantitative texture parameters extracted from multiphasic contrast-enhanced magnetic resonance (MR) imaging in differentiating between benign and malignant masses (oncocytoma vs. clear cell and papillary RCC) and between common subtypes of renal cell carcinoma (clear cell vs. papillary RCC) in small renal masses (< 4 cm). METHOD: One-hundred and forty-two renal lesions (90 clear cell and 22 papillary RCCs; 30 oncocytomas) were identified in a cohort of 41 patients (18 men, 23 women: mean age, 52.8 ± 14.4 years) who underwent preoperative multiphasic contrast-enhanced MR with four phases (unenhanced, arterial, venous, and delayed) between 2015 and 2016. In this study, texture features were extracted from entire cross-sectional tumoral region in three consecutive slices containing the largest cross-sectional area from each of the four phases. The change in imaging feature between precontrast imaging and each postcontrast phase was calculated. Data dimension reduction and feature selection were performed by conducting (1) pairwise Wilcoxon rank test followed by modified false discovery rate adjustment, and (2) Lasso regression. Multivariate modeling incorporating the selected features was performed using random forest classification method. RESULTS: Histogram imaging features were informative variables in differentiating between benign and malignant masses, while textures imaging features were of added value in differentiating between subtypes of RCCs. Papillary RCCs were distinguished from clear cell RCCs (sensitivity 65.5%, specificity 88%, and accuracy 77.9%), oncocytomas from clear cell RCCs (sensitivity 67.3%, specificity 88.9%, and accuracy 79.3%), and oncocytomas from papillary and clear cell RCCs (sensitivity 64.7%, specificity 85.9%, and accuracy 77.9%). CONCLUSIONS: A combination of histogram and texture imaging features on multiphasic MR can help differentiate histologic cell types in common small renal masses (< 4 cm).
Authors: Mahul B Amin; Frederick L Greene; Stephen B Edge; Carolyn C Compton; Jeffrey E Gershenwald; Robert K Brookland; Laura Meyer; Donna M Gress; David R Byrd; David P Winchester Journal: CA Cancer J Clin Date: 2017-01-17 Impact factor: 508.702
Authors: Alexander Kutikov; Lindsay K Fossett; Parvati Ramchandani; John E Tomaszewski; Evan S Siegelman; Marc P Banner; Keith N Van Arsdalen; Alan J Wein; S Bruce Malkowicz Journal: Urology Date: 2006-10 Impact factor: 2.649
Authors: Ruben Ngnitewe Massa'a; Elizabeth M Stoeckl; Meghan G Lubner; David Smith; Lu Mao; Daniel D Shapiro; E Jason Abel; Andrew L Wentland Journal: Abdom Radiol (NY) Date: 2022-06-20