Effectiveness of Ex vivo Ultrasound for Detecting Sentinel Node Metastasis in Breast Cancer

Abstract

33 false positive false negative ex were 83.3%, 91.8%, 60.6%, 97.3%, 8.2%, 16.7% and 90.7% Conclusion: Ex vivo ultrasound evaluation for detecting sentinel lymph node during the be helpful to decide the extent lymph Purpose: The presence of lymph node metastasis is a key factor for deciding upon radical axillary dissection during a breast cancer operation. We performed prospective research to assess the accuracy and effectiveness of ex vivo ultrasound for detecting sentinel node metastasis during the operation. Methods: 183 fresh sentinel lymph nodes from 30 breast cancer patients had sonographic examination performed on them by a specialized radiologist immediately after surgical resection. The sonographic criteria for malignant lymph nodes were uneven cortical thickness, a node more than 3 mm in diameter, the absence of the hilum and a round hypoechoic node. After sonographic evaluation, the speci-men were delivered to the department of pathology for frozen biopsy and permanent staining. Results: Among 133 lymph nodes that were examined on frozen sectioning, 12 (9.0%) were revealed as metastatic nodes and 121 (90.9%) were revealed as benign. On US examination, 150 (81.9%) among the detected 183 nodes were read as benign and 33 (18.1%) were read as metastatic. Among 150 benign nodes, four (2.6%) were proven as metastasis on permanent pathology, and 20 (60.6%)