Diagnostic performance of axillary ultrasound and standard breast MRI for differentiation between limited and advanced axillary nodal disease in clinically node-positive breast cancer patients

Preoperative differentiation between limited (pN1; 1–3 axillary metastases) and advanced (pN2–3; ≥4 axillary metastases) nodal disease can provide relevant information regarding surgical planning and guiding adjuvant radiation therapy. The aim was to evaluate the diagnostic performance of preoperati...

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Veröffentlicht in:Scientific reports 2019-11, Vol.9 (1), p.17476-8, Article 17476
Hauptverfasser: Samiei, S., van Nijnatten, T. J. A., van Beek, H. C., Polak, M. P. J., Maaskant-Braat, A. J. G., Heuts, E. M., van Kuijk, S. M. J., Schipper, R. J., Lobbes, M. B. I., Smidt, M. L.
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container_title Scientific reports
container_volume 9
creator Samiei, S.
van Nijnatten, T. J. A.
van Beek, H. C.
Polak, M. P. J.
Maaskant-Braat, A. J. G.
Heuts, E. M.
van Kuijk, S. M. J.
Schipper, R. J.
Lobbes, M. B. I.
Smidt, M. L.
description Preoperative differentiation between limited (pN1; 1–3 axillary metastases) and advanced (pN2–3; ≥4 axillary metastases) nodal disease can provide relevant information regarding surgical planning and guiding adjuvant radiation therapy. The aim was to evaluate the diagnostic performance of preoperative axillary ultrasound (US) and breast MRI for differentiation between pN1 and pN2–3 in clinically node-positive breast cancer. A total of 49 patients were included with axillary metastasis confirmed by US-guided tissue sampling. All had undergone breast MRI between 2008–2014 and subsequent axillary lymph node dissection. Unenhanced T2-weighted MRI exams were reviewed by two radiologists independently. Each lymph node on the MRI exams was scored using a confidence scale (0–4) and compared with histopathology. Diagnostic performance parameters were calculated for differentiation between pN1 and pN2–3. Interobserver agreement was determined using Cohen’s kappa coefficient. At final histopathology, 67.3% (33/49) and 32.7% (16/49) of patients were pN1 and pN2–3, respectively. Breast MRI was comparable to US in terms of accuracy (MRI reader 1 vs US, 71.4% vs 69.4%, p = 0.99; MRI reader 2 vs US, 73.5% vs 69.4%, p = 0.77). In the case of 1–3 suspicious lymph nodes, pN2–3 was observed in 30.4% on US (positive predictive value (PPV) 69.6%) and in 22.2–24.3% on MRI (PPV 75.7–77.8%). In the case of ≥4 suspicious lymph nodes, pN1 was observed in 33.3% on US (negative predictive value (NPV) 66.7%) and in 38.5–41.7% on MRI (NPV 58.3–61.5%). Interobserver agreement was considered good (k = 0.73). In clinically node-positive patients, the diagnostic performance of axillary US and breast MRI is comparable and limited for accurate differentiation between pN1 and pN2–3. Therefore, there seems no added clinical value of preoperative breast MRI regarding nodal staging in patients with positive axillary US.
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J. A. ; van Beek, H. C. ; Polak, M. P. J. ; Maaskant-Braat, A. J. G. ; Heuts, E. M. ; van Kuijk, S. M. J. ; Schipper, R. J. ; Lobbes, M. B. I. ; Smidt, M. L.</creator><creatorcontrib>Samiei, S. ; van Nijnatten, T. J. A. ; van Beek, H. C. ; Polak, M. P. J. ; Maaskant-Braat, A. J. G. ; Heuts, E. M. ; van Kuijk, S. M. J. ; Schipper, R. J. ; Lobbes, M. B. I. ; Smidt, M. L.</creatorcontrib><description>Preoperative differentiation between limited (pN1; 1–3 axillary metastases) and advanced (pN2–3; ≥4 axillary metastases) nodal disease can provide relevant information regarding surgical planning and guiding adjuvant radiation therapy. The aim was to evaluate the diagnostic performance of preoperative axillary ultrasound (US) and breast MRI for differentiation between pN1 and pN2–3 in clinically node-positive breast cancer. A total of 49 patients were included with axillary metastasis confirmed by US-guided tissue sampling. All had undergone breast MRI between 2008–2014 and subsequent axillary lymph node dissection. Unenhanced T2-weighted MRI exams were reviewed by two radiologists independently. Each lymph node on the MRI exams was scored using a confidence scale (0–4) and compared with histopathology. Diagnostic performance parameters were calculated for differentiation between pN1 and pN2–3. Interobserver agreement was determined using Cohen’s kappa coefficient. At final histopathology, 67.3% (33/49) and 32.7% (16/49) of patients were pN1 and pN2–3, respectively. Breast MRI was comparable to US in terms of accuracy (MRI reader 1 vs US, 71.4% vs 69.4%, p = 0.99; MRI reader 2 vs US, 73.5% vs 69.4%, p = 0.77). In the case of 1–3 suspicious lymph nodes, pN2–3 was observed in 30.4% on US (positive predictive value (PPV) 69.6%) and in 22.2–24.3% on MRI (PPV 75.7–77.8%). In the case of ≥4 suspicious lymph nodes, pN1 was observed in 33.3% on US (negative predictive value (NPV) 66.7%) and in 38.5–41.7% on MRI (NPV 58.3–61.5%). Interobserver agreement was considered good (k = 0.73). In clinically node-positive patients, the diagnostic performance of axillary US and breast MRI is comparable and limited for accurate differentiation between pN1 and pN2–3. 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J. A.</au><au>van Beek, H. C.</au><au>Polak, M. P. J.</au><au>Maaskant-Braat, A. J. G.</au><au>Heuts, E. M.</au><au>van Kuijk, S. M. J.</au><au>Schipper, R. J.</au><au>Lobbes, M. B. I.</au><au>Smidt, M. L.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Diagnostic performance of axillary ultrasound and standard breast MRI for differentiation between limited and advanced axillary nodal disease in clinically node-positive breast cancer patients</atitle><jtitle>Scientific reports</jtitle><stitle>Sci Rep</stitle><addtitle>Sci Rep</addtitle><date>2019-11-25</date><risdate>2019</risdate><volume>9</volume><issue>1</issue><spage>17476</spage><epage>8</epage><pages>17476-8</pages><artnum>17476</artnum><issn>2045-2322</issn><eissn>2045-2322</eissn><abstract>Preoperative differentiation between limited (pN1; 1–3 axillary metastases) and advanced (pN2–3; ≥4 axillary metastases) nodal disease can provide relevant information regarding surgical planning and guiding adjuvant radiation therapy. The aim was to evaluate the diagnostic performance of preoperative axillary ultrasound (US) and breast MRI for differentiation between pN1 and pN2–3 in clinically node-positive breast cancer. A total of 49 patients were included with axillary metastasis confirmed by US-guided tissue sampling. All had undergone breast MRI between 2008–2014 and subsequent axillary lymph node dissection. Unenhanced T2-weighted MRI exams were reviewed by two radiologists independently. Each lymph node on the MRI exams was scored using a confidence scale (0–4) and compared with histopathology. Diagnostic performance parameters were calculated for differentiation between pN1 and pN2–3. Interobserver agreement was determined using Cohen’s kappa coefficient. At final histopathology, 67.3% (33/49) and 32.7% (16/49) of patients were pN1 and pN2–3, respectively. Breast MRI was comparable to US in terms of accuracy (MRI reader 1 vs US, 71.4% vs 69.4%, p = 0.99; MRI reader 2 vs US, 73.5% vs 69.4%, p = 0.77). In the case of 1–3 suspicious lymph nodes, pN2–3 was observed in 30.4% on US (positive predictive value (PPV) 69.6%) and in 22.2–24.3% on MRI (PPV 75.7–77.8%). In the case of ≥4 suspicious lymph nodes, pN1 was observed in 33.3% on US (negative predictive value (NPV) 66.7%) and in 38.5–41.7% on MRI (NPV 58.3–61.5%). Interobserver agreement was considered good (k = 0.73). In clinically node-positive patients, the diagnostic performance of axillary US and breast MRI is comparable and limited for accurate differentiation between pN1 and pN2–3. Therefore, there seems no added clinical value of preoperative breast MRI regarding nodal staging in patients with positive axillary US.</abstract><cop>London</cop><pub>Nature Publishing Group UK</pub><pmid>31767929</pmid><doi>10.1038/s41598-019-54017-0</doi><tpages>8</tpages><oa>free_for_read</oa></addata></record>
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subjects 692/308/409
692/4028/546
Adult
Aged
Axilla - diagnostic imaging
Axilla - pathology
Axilla - surgery
Biopsy
Breast cancer
Breast Neoplasms - diagnostic imaging
Breast Neoplasms - pathology
Diagnosis, Differential
Female
Histopathology
Humanities and Social Sciences
Humans
Lymph Node Excision
Lymph nodes
Lymphatic Metastasis - diagnostic imaging
Lymphatic Metastasis - pathology
Lymphatic system
Magnetic Resonance Imaging
Metastases
Metastasis
Middle Aged
multidisciplinary
Observer Variation
Radiation therapy
Radiographic Image Interpretation, Computer-Assisted
Science
Science (multidisciplinary)
Sensitivity and Specificity
Ultrasonic imaging
Ultrasonography
Ultrasound
title Diagnostic performance of axillary ultrasound and standard breast MRI for differentiation between limited and advanced axillary nodal disease in clinically node-positive breast cancer patients
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