Computed tomography reconstruction for evaluating response in axillary lymph nodes of breast cancer after neoadjuvant chemotherapy.

Clinical & Translational Oncology : Official Publication of the Federation of Spanish Oncology Societies and of the National Cancer Institute of Mexico
L WangTao Ouyang

Abstract

To assess the performance of computed tomography (CT) reconstruction in evaluating the response in metastatic lymph nodes after neoadjuvant chemotherapy (NAC) in breast cancer patients. Patients undergoing pre-NAC and post-NAC CT were identified from the Peking University Cancer Hospital database. Axillary Lymph nodes (ALNs) that shrunk to < 5 mm in short-axis diameter after NAC on CT reconstruction images were classified as clinical complete response. Evaluations of CT reconstruction on ALNs were correlated with residual nodal disease in the final pathology. Overall, 53 invasive breast cancer patients between October 2016 and March 2018 were eligible for our study. The median age was 48 (range 35-70) years. Most women presented with T2 tumors (35/53, 66.0%). After NAC, 20 (37.7%) patients without residual nodal disease were defined as pCR. Of 53 patients, 18 (33.9%) showed negative conversion of ALNs on CT reconstruction evaluation; axillary pCR was present in 16/18 (88.9%) patients. Among 35 patients with abnormal nodes on post-NAC CT reconstruction, 31 (88.6%) had axillary metastasis on the final pathology. The sensitivity and specificity of CT reconstruction in predicting node-negative status were 80.0% and 93.9%, respectiv...Continue Reading

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