OBJECTIVE: This study aims to determine the diagnostic value of diffusion-weighted imaging (DWI) in the differentiation of metastatic lymph nodes from non-metastatic lymph nodes in uterine cervical cancer. METHODS: In 42 patients who underwent lymph node dissection for uterine cervical cancer, conventional MRI and DWI examinations were performed before surgery. Of the 1109 total dissected pelvic lymph nodes, 188 enlarged nodes with a short-axis diameter of 5mm or greater were included for further analysis. Each of the size-based criteria (i.e., short-axis diameter and long-axis diameter) and ADC-based criteria (i.e., mean ADC, minimum ADC, mean rADC (relative ADC) and minimum rADC) were compared between metastatic lymph nodes and non-metastatic lymph nodes. RESULTS: There were statistically significant differences between metastatic and non-metastatic lymph nodes in the short-axis diameter, long-axis diameter, mean ADC, minimum ADC, mean rADC and minimum rADC (P < 0.001). The Az of the minimum ADC (0.990) was greater than that of the other ADC-based criteria (0.974, 0.939, 0.976 for mean ADC, mean rADC and minimum rADC, respectively) and all size-based criteria (0.878 for short-axis diameter and 0.858 for long-axis diameter) (P < 0.05). Using the minimum ADC criteria (≤ 0.881 × 10⁻³ mm²/s), the sensitivity and specificity for differentiating metastatic from non-metastatic lymph nodes were 95.7% and 96.5%, respectively. CONCLUSIONS: DWI is feasible for differentiating metastatic from non-metastatic pelvic lymph nodes in patients with uterine cervical cancer and minimum ADC could be served as a representative marker.
OBJECTIVE: This study aims to determine the diagnostic value of diffusion-weighted imaging (DWI) in the differentiation of metastatic lymph nodes from non-metastatic lymph nodes in uterine cervical cancer. METHODS: In 42 patients who underwent lymph node dissection for uterine cervical cancer, conventional MRI and DWI examinations were performed before surgery. Of the 1109 total dissected pelvic lymph nodes, 188 enlarged nodes with a short-axis diameter of 5mm or greater were included for further analysis. Each of the size-based criteria (i.e., short-axis diameter and long-axis diameter) and ADC-based criteria (i.e., mean ADC, minimum ADC, mean rADC (relative ADC) and minimum rADC) were compared between metastatic lymph nodes and non-metastatic lymph nodes. RESULTS: There were statistically significant differences between metastatic and non-metastatic lymph nodes in the short-axis diameter, long-axis diameter, mean ADC, minimum ADC, mean rADC and minimum rADC (P < 0.001). The Az of the minimum ADC (0.990) was greater than that of the other ADC-based criteria (0.974, 0.939, 0.976 for mean ADC, mean rADC and minimum rADC, respectively) and all size-based criteria (0.878 for short-axis diameter and 0.858 for long-axis diameter) (P < 0.05). Using the minimum ADC criteria (≤ 0.881 × 10⁻³ mm²/s), the sensitivity and specificity for differentiating metastatic from non-metastatic lymph nodes were 95.7% and 96.5%, respectively. CONCLUSIONS: DWI is feasible for differentiating metastatic from non-metastatic pelvic lymph nodes in patients with uterine cervical cancer and minimum ADC could be served as a representative marker.
Authors: Gaiane M Rauch; Harmeet Kaur; Haesun Choi; Randy D Ernst; Ann H Klopp; Piyaporn Boonsirikamchai; Shannon N Westin; Leonardo P Marcal Journal: Radiographics Date: 2014 Jul-Aug Impact factor: 5.333
Authors: Yan Yan Yu; Rui Zhang; Rui Tong Dong; Qi Yun Hu; Tao Yu; Fan Liu; Ya Hong Luo; Yue Dong Journal: Br J Radiol Date: 2019-04-01 Impact factor: 3.039