A Preliminary Study of Diagnosis of Lymph Nodes Metastasis of Breast Cancer by Preoperative Ct Scan

Multidetector-row computed tomography for the preoperative evaluation of axillary nodal status in patients with breast cancer

“…However, to select candidates for ALND without SLNB, there must be clear diagnostic criteria, and several criteria have been proposed (Table 4). 2,3,[9][10][11] Murakami 2 reported that a soybean-shaped lymph node was signifi cantly more likely to be metastatic, whereas "C"-shaped or ring-like lymph nodes were more likely to be non-metastatic in contrast-enhanced imaging. Hata et al 3 reported that lymph nodes larger than or equal to 5 mm on the short axis were considered to be abnormal on CT. To select candidates for ALND without SLNB, a high positive predictive value is required and to fulfi ll this requirement, we defi ned a metastatic lymph node as an oval or round lymph node with more than 5 mm on the short axis.…”

“…The positive predictive value for diagnosing nodal status on the basis of CT fi ndings has been reported to range from 72% to 95%. 2,3,[9][10][11] Accordingly, our criteria enabled us to obtain a high positive predictive value of 90.9%. Yuen et al 11 used CT to evaluate both SLN and lymph nodes more distal than the SLN, and reported that the sensitivity of CT was 76% and the positive predictive value was 95%.…”