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Park S, Kim JH, Cha YK, Chung MJ, Woo JH, Park S. Application of Machine Learning Algorithm in Predicting Axillary Lymph Node Metastasis from Breast Cancer on Preoperative Chest CT. Diagnostics (Basel) 2023; 13:2953. [PMID: 37761320 PMCID: PMC10528867 DOI: 10.3390/diagnostics13182953] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Revised: 09/05/2023] [Accepted: 09/13/2023] [Indexed: 09/29/2023] Open
Abstract
Axillary lymph node (ALN) status is one of the most critical prognostic factors in patients with breast cancer. However, ALN evaluation with contrast-enhanced CT (CECT) has been challenging. Machine learning (ML) is known to show excellent performance in image recognition tasks. The purpose of our study was to evaluate the performance of the ML algorithm for predicting ALN metastasis by combining preoperative CECT features of both ALN and primary tumor. This was a retrospective single-institutional study of a total of 266 patients with breast cancer who underwent preoperative chest CECT. Random forest (RF), extreme gradient boosting (XGBoost), and neural network (NN) algorithms were used. Statistical analysis and recursive feature elimination (RFE) were adopted as feature selection for ML. The best ML-based ALN prediction model for breast cancer was NN with RFE, which achieved an AUROC of 0.76 ± 0.11 and an accuracy of 0.74 ± 0.12. By comparing NN with RFE model performance with and without ALN features from CECT, NN with RFE model with ALN features showed better performance at all performance evaluations, which indicated the effect of ALN features. Through our study, we were able to demonstrate that the ML algorithm could effectively predict the final diagnosis of ALN metastases from CECT images of the primary tumor and ALN. This suggests that ML has the potential to differentiate between benign and malignant ALNs.
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Affiliation(s)
- Soyoung Park
- Department of Health Sciences and Technology, SAIHST, Sungkyunkwan University, Seoul 06351, Republic of Korea; (S.P.); (S.P.)
| | - Jong Hee Kim
- Department of Radiology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul 06351, Republic of Korea; (J.H.K.); (J.H.W.)
| | - Yoon Ki Cha
- Department of Radiology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul 06351, Republic of Korea; (J.H.K.); (J.H.W.)
| | - Myung Jin Chung
- Department of Radiology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul 06351, Republic of Korea; (J.H.K.); (J.H.W.)
| | - Jung Han Woo
- Department of Radiology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul 06351, Republic of Korea; (J.H.K.); (J.H.W.)
| | - Subin Park
- Department of Health Sciences and Technology, SAIHST, Sungkyunkwan University, Seoul 06351, Republic of Korea; (S.P.); (S.P.)
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Sun S, Bai J, Wang X. Comparative observation of common tracers in sentinel lymph node biopsy of breast cancer and a study on simplifying its surgical procedure. Front Surg 2023; 10:1180919. [PMID: 37255743 PMCID: PMC10225584 DOI: 10.3389/fsurg.2023.1180919] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Accepted: 04/26/2023] [Indexed: 06/01/2023] Open
Abstract
Background Many breast cancer patients have avoided axillary lymph node dissection after sentinel lymph node biopsy (SLNB). During the SLNB operation, the color of lymphatic vessels is sometimes poor and so finding them is difficult. This study observed the tracing effects of three tracer combinations and also reported our experience in simplifying the SLNB program. Methods In total, 123 breast cancer patients whose TNM stage was cT1-2N0M0 were retrospectively studied. According to the tracer used, the patients were divided into the carbon nanoparticle (CNP) group (38 cases), CNP combined with methylene blue (CNP + MB) group (41 cases), and indocyanine green combined with MB (ICG + MB) group (44 cases). All 123 breast cancer cases were also classified into the non-tracking group (53 cases) and tracking group (70 cases) according to the SLNB operation process. The non-tracking group looked for the stained sentinel lymph nodes directly, while the tracking group looked for the stained lymph nodes along the lymphatic vessels. Results The SLN identification rates in the CNP, CNP + MB, and ICG + MB groups were 97.4%, 97.6%, and 95.5% respectively (P > 0.05). The average number of SLNs detected was 4.92 ± 2.06, 5.12 ± 2.18, and 4.57 ± 1.90, respectively (P > 0.05). The ideal display rates of lymphatic vessels in the three groups were 86.8%, 87.8%, and 93.2%, respectively (P > 0.05). The SLN identification rates in the non-tracking and tracking groups were 96.2% and 97.1%, respectively (P > 0.05). The average number of SLNs detected were 5.73 ± 1.76 and 5.70 ± 1.93, respectively (P > 0.05), and the average operation time was 16.47 ± 5.78 and 27.53 ± 7.75 min, respectively (P < 0.05). Conclusion This is the first study to observe the application effect of CNP combined with MB and ICG combined with MB tracers in SLNB of breast cancer patients. No significant difference was observed among the patients in SLN identification and lymphatic vessel display. Omitting the step of searching for lymphatic vessels in SLNB surgery does not reduce the surgical effect, but the reduced operating steps can reduce the surgical time and theoretically reduce postoperative complications.
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Luo Y, Chen J, Feng L, Cao W, Wu H, Ma M, He F, Luo J, Wu C, Liu J, Chen Q, Luo J. Study on Sentinel Lymph Node and Its Lymphatic Drainage Pattern of Breast Cancer by Contrast-Enhanced Ultrasound. JOURNAL OF ULTRASOUND IN MEDICINE : OFFICIAL JOURNAL OF THE AMERICAN INSTITUTE OF ULTRASOUND IN MEDICINE 2022; 41:2727-2737. [PMID: 35128699 PMCID: PMC9790426 DOI: 10.1002/jum.15957] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Revised: 01/19/2022] [Accepted: 01/27/2022] [Indexed: 06/14/2023]
Abstract
OBJECTIVES Sentinel lymph node (SLN) and its lymphatic drainage pattern (LDP) of breast cancer were studied by contrast-enhanced ultrasound (CEUS). METHODS From July 2017 to December 2019, patients with SLN localization of breast cancer in Sichuan Academy of Medical Sciences·Sichuan Provincial People's Hospital were selected. The sentinel lymph system of breast cancer was observed by CEUS before both operation and blue staining in the surgery. The location, number, and route of sentinel lymphatic channel (SLC) were recorded, along with the number, size, and the depth from skin of SLN. LDPs were summarized according to these basic characteristics of SLC and SLN. RESULTS A total of 368 cases were included; 465 SLCs and 423 SLNs were detected. Most of the SLCs were originated from the outer upper quadrant of areola. Eleven LDPs were found, including 31 subtypes of LDPs. There were 6 cases of type A (1.63%), 15 cases of type B (4.08%), 223 cases of type C (57.88%), 38 cases of type D (10.33%), 2 cases of type E (0.54%), 3 cases of type F (0.82%), 50 cases of type G (13.59%), 30 cases of type H (8.15%), 2 cases of type I (0.54%), 6 cases of type J (1.63%), and 3 cases of type K (0.82%). CONCLUSIONS The most common LDP of breast cancer was one SLC originated from the upper quadrant of areola with one SLN. CEUS can identify the LDP before surgery to reduce the false negative rate of SLN biopsy.
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Affiliation(s)
- Yunhao Luo
- Ultrasound Department, Qingbaijiang Maternal and Child Health Hospital, West China Second HospitalSichuan UniversityChengduChina
| | - Jie Chen
- Department of Breast Surgery, Sichuan Academy of Medical SciencesSichuan Provincial People's HospitalChengduChina
| | - Liting Feng
- Ultrasound Department, Sichuan Academy of Medical SciencesSichuan Provincial People's HospitalChengduChina
| | - Wenbin Cao
- Ultrasound Department, Sichuan Academy of Medical SciencesSichuan Provincial People's HospitalChengduChina
| | - Hao Wu
- Ultrasound Department, Sichuan Academy of Medical SciencesSichuan Provincial People's HospitalChengduChina
| | - Miao Ma
- Ultrasound DepartmentThe second people's Hospital in Xindu District of ChengduChengduChina
| | - Fangting He
- West China School of Public Health, West China Fourth HospitalSichuan UniversityChengduChina
| | - Jing Luo
- Department of Breast Surgery, Sichuan Academy of Medical SciencesSichuan Provincial People's HospitalChengduChina
| | - Chihua Wu
- Department of Breast Surgery, Sichuan Academy of Medical SciencesSichuan Provincial People's HospitalChengduChina
| | - Jinping Liu
- Department of Breast Surgery, Sichuan Academy of Medical SciencesSichuan Provincial People's HospitalChengduChina
| | - Qin Chen
- Ultrasound Department, Sichuan Academy of Medical SciencesSichuan Provincial People's HospitalChengduChina
| | - Jun Luo
- Ultrasound Department, Sichuan Academy of Medical SciencesSichuan Provincial People's HospitalChengduChina
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Li P, Sun D. Advanced diagnostic imaging of sentinel lymph node in early stage breast cancer. JOURNAL OF CLINICAL ULTRASOUND : JCU 2022; 50:415-421. [PMID: 35092313 PMCID: PMC9303781 DOI: 10.1002/jcu.23151] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Revised: 01/07/2022] [Accepted: 01/08/2022] [Indexed: 06/14/2023]
Abstract
Sentinel lymph node biopsy has been regarded as the standard procedure for early staging breast cancer. One of the key steps is to locate the sentinel lymph node (SLN). The recommended method is the joint use of blue dye and radioisotope. However, due to radionuclide radiation and high cost, it is urgent to develop more convenient and sensitive imaging methods to accurately locate SLN. This article discusses the advancement of accurately locating SLN by isotope tracer imaging, magnetic tracer method, computed tomographic lymphography, and trans-lymphatic contrast-enhanced ultrasound, as well as proposing new propose for clinical diagnosis.
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Affiliation(s)
- Ping Li
- Weifang Medical UniversityWeifangShandongChina
- Department of UltrasonographyPeking University Shenzhen HospitalShenzhenGuangdongChina
| | - Desheng Sun
- Department of UltrasonographyPeking University Shenzhen HospitalShenzhenGuangdongChina
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Ou X, Zhu J, Qu Y, Wang C, Wang B, Xu X, Wang Y, Wen H, Ma A, Liu X, Zou X, Wen Z. Imaging features of sentinel lymph node mapped by multidetector-row computed tomography lymphography in predicting axillary lymph node metastasis. BMC Med Imaging 2021; 21:193. [PMID: 34911489 PMCID: PMC8675471 DOI: 10.1186/s12880-021-00722-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2021] [Accepted: 11/26/2021] [Indexed: 11/10/2022] Open
Abstract
INTRODUCTION Accurately assessing axillary lymph node (ALN) status in breast cancer is vital for clinical decision making and prognosis. The purpose of this study was to evaluate the predictive value of sentinel lymph node (SLN) mapped by multidetector-row computed tomography lymphography (MDCT-LG) for ALN metastasis in breast cancer patients. METHODS 112 patients with breast cancer who underwent preoperative MDCT-LG examination were included in the study. Long-axis diameter, short-axis diameter, ratio of long-/short-axis and cortical thickness were measured. Logistic regression analysis was performed to evaluate independent predictors associated with ALN metastasis. The prediction of ALN metastasis was determined with related variables of SLN using receiver operating characteristic (ROC) curve analysis. RESULTS Among the 112 cases, 35 (30.8%) cases had ALN metastasis. The cortical thickness in metastatic ALN group was significantly thicker than that in non-metastatic ALN group (4.0 ± 1.2 mm vs. 2.4 ± 0.7 mm, P < 0.001). Multi-logistic regression analysis indicated that cortical thickness of > 3.3 mm (OR 24.53, 95% CI 6.58-91.48, P < 0.001) had higher risk for ALN metastasis. The best sensitivity, specificity, negative predictive value(NPV) and AUC of MDCT-LG for ALN metastasis prediction based on the single variable of cortical thickness were 76.2%, 88.5%, 90.2% and 0.872 (95% CI 0.773-0.939, P < 0.001), respectively. CONCLUSION ALN status can be predicted using the imaging features of SLN which was mapped on MDCT-LG in breast cancer patients. Besides, it may be helpful to select true negative lymph nodes in patients with early breast cancer, and SLN biopsy can be avoided in clinically and radiographically negative axilla.
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Affiliation(s)
- Xiaochan Ou
- Department of Radiology, Zhujiang Hospital, Southern Medical University, 253 Gongye Middle Avenue, Haizhu District, Guangzhou, 510282, Guangdong, China
| | - Jianbin Zhu
- Department of Radiology, Zhujiang Hospital, Southern Medical University, 253 Gongye Middle Avenue, Haizhu District, Guangzhou, 510282, Guangdong, China
| | - Yaoming Qu
- Department of Radiology, Zhujiang Hospital, Southern Medical University, 253 Gongye Middle Avenue, Haizhu District, Guangzhou, 510282, Guangdong, China
| | - Chengmei Wang
- Department of Radiology, Zhujiang Hospital, Southern Medical University, 253 Gongye Middle Avenue, Haizhu District, Guangzhou, 510282, Guangdong, China
| | - Baiye Wang
- Department of Radiology, Zhujiang Hospital, Southern Medical University, 253 Gongye Middle Avenue, Haizhu District, Guangzhou, 510282, Guangdong, China
| | - Xirui Xu
- Department of Breast Surgery, Zhujiang Hospital, Southern Medical University, 253 Gongye Middle Avenue, Haizhu District, Guangzhou, 510828, Guangdong, China
| | - Yanyu Wang
- Department of Radiology, Zhujiang Hospital, Southern Medical University, 253 Gongye Middle Avenue, Haizhu District, Guangzhou, 510282, Guangdong, China
| | - Haitao Wen
- Department of Radiology, Zhujiang Hospital, Southern Medical University, 253 Gongye Middle Avenue, Haizhu District, Guangzhou, 510282, Guangdong, China
| | - Andong Ma
- Department of Radiology, Zhujiang Hospital, Southern Medical University, 253 Gongye Middle Avenue, Haizhu District, Guangzhou, 510282, Guangdong, China
| | - Xinzi Liu
- Department of Radiology, Zhujiang Hospital, Southern Medical University, 253 Gongye Middle Avenue, Haizhu District, Guangzhou, 510282, Guangdong, China
| | - Xia Zou
- Department of Radiology, Zhujiang Hospital, Southern Medical University, 253 Gongye Middle Avenue, Haizhu District, Guangzhou, 510282, Guangdong, China
| | - Zhibo Wen
- Department of Radiology, Zhujiang Hospital, Southern Medical University, 253 Gongye Middle Avenue, Haizhu District, Guangzhou, 510282, Guangdong, China.
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Yang C, Dong J, Liu Z, Guo Q, Nie Y, Huang D, Qin N, Shu J. Prediction of Metastasis in the Axillary Lymph Nodes of Patients With Breast Cancer: A Radiomics Method Based on Contrast-Enhanced Computed Tomography. Front Oncol 2021; 11:726240. [PMID: 34616678 PMCID: PMC8488257 DOI: 10.3389/fonc.2021.726240] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Accepted: 08/27/2021] [Indexed: 12/29/2022] Open
Abstract
Background The use of traditional techniques to evaluate breast cancer is restricted by the subjective nature of assessment, variation across radiologists, and limited data. Radiomics may predict axillary lymph node metastasis (ALNM) of breast cancer more accurately. Purpose The aim was to evaluate the diagnostic performance of a radiomics model based on ALNs themselves that used contrast-enhanced computed tomography (CECT) to detect ALNM of breast cancer. Methods We retrospectively enrolled 402 patients with breast cancer confirmed by pathology from January 2016 to October 2019. Three hundred and ninety-six features were extracted for all patients from axial CECT images of 825 ALNs using Artificial Intelligent Kit software (GE Medical Systems, Version V3.1.0.R). Next, the radiomics model was trained, validated, and tested for predicting ALNM in breast cancer by using a support vector machine algorithm. Finally, the performance of the radiomics model was evaluated in terms of its classification accuracy and the value of the area under the curve (AUC). Results The radiomics model yielded the best classification accuracy of 89.1% and the highest AUC of 0.92 (95% CI: 0.91-0.93, p=0.002) for discriminating ALNM in breast cancer in the validation cohorts. In the testing cohorts, the model also demonstrated better performance, with an accuracy of 88.5% and an AUC of 0.94 (95% CI: 0.93-0.95, p=0.005) for predicting ALNM in breast cancer. Conclusion The radiomics model based on CECT images can be used to predict ALNM in breast cancer and has significant potential in clinical noninvasive diagnosis and in the prediction of breast cancer metastasis.
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Affiliation(s)
- Chunmei Yang
- Department of Radiology, The Affiliated Hospital of Southwest Medical University, Luzhou, China.,Nuclear Medicine and Molecular Imaging Key Laboratory of Sichuan Province, The Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Jing Dong
- Department of Radiology, The Affiliated Hospital of Southwest Medical University, Luzhou, China.,Nuclear Medicine and Molecular Imaging Key Laboratory of Sichuan Province, The Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Ziyi Liu
- The Institute of Systems Science and Technology, Southwest Jiaotong University, Chengdu, China
| | - Qingxi Guo
- Department of Pathology, The Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Yue Nie
- Department of Radiology, Luzhou People's Hospital, Luzhou, China
| | - Deqing Huang
- The Institute of Systems Science and Technology, Southwest Jiaotong University, Chengdu, China
| | - Na Qin
- The Institute of Systems Science and Technology, Southwest Jiaotong University, Chengdu, China
| | - Jian Shu
- Department of Radiology, The Affiliated Hospital of Southwest Medical University, Luzhou, China.,Nuclear Medicine and Molecular Imaging Key Laboratory of Sichuan Province, The Affiliated Hospital of Southwest Medical University, Luzhou, China
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Wen S, Liang Y, Kong X, Liu B, Ma T, Zhou Y, Jiang L, Li X, Yang Q. Application of preoperative computed tomographic lymphography for precise sentinel lymph node biopsy in breast cancer patients. BMC Surg 2021; 21:187. [PMID: 33836721 PMCID: PMC8033684 DOI: 10.1186/s12893-021-01190-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Accepted: 04/01/2021] [Indexed: 12/17/2022] Open
Abstract
Background In light of the extensive application of sentinel lymph node biopsy (SLNB) in clinically node-negative breast cancer patients and the recently investigated failure of SLNB after lumpectomy, it has become important to explore methods for preoperative mapping of sentinel lymph nodes (SLNs) and their lymphatics to direct precise SLNB and improve the identification rate of SLNs. Methods Twenty-seven patients with suspected breast cancer based on the results of the clinical examination and imaging were enrolled in the study. Computed tomographic lymphography (CTLG) followed by CT three-dimensional reconstruction was performed to determine the localization of SLNs and lymphatics on the body surface preoperatively. Intraoperatively combined staining with methylene blue and indocyanine green was used to evaluate the accuracy and feasibility of CTLG. Results SLNs and lymphatics from the breast were identified using CTLG in all patients, and preoperative SLNs and lymphatics localization on the body surface showed a significant role in the selection of operative incision and injection points. The accuracy rate of SLN and lymphatic detection by CTLG was 92.6% compared with intraoperatively combined staining. Moreover, preoperative CTLG performed well in SLN number detection, and the accuracy rate was 95.2%. Conclusion We evaluate the procedure and application of preoperative CTLG in the superficial localization of SLNs and lymphatics, which may lead to a decreased incidence of cutting off the lymphatics of SLNs and consequently more rapid and accurate SLN detection. This method promotes personalized SLN mapping, providing detailed information about the number and anatomical location of SLNs and lymphatics for adequate surgical planning for breast cancer patients. Supplementary Information The online version contains supplementary material available at 10.1186/s12893-021-01190-7.
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Affiliation(s)
- Shishuai Wen
- Department of Breast Surgery, General Surgery, Qilu Hospital of Shandong University, Wenhua Xi Road No. 107, Jinan, 250012, Shandong, China.,Department of Head and Neck Surgery, Fudan University Shanghai Cancer Center, Shanghai, China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Yiran Liang
- Department of Breast Surgery, General Surgery, Qilu Hospital of Shandong University, Wenhua Xi Road No. 107, Jinan, 250012, Shandong, China
| | - Xiaoli Kong
- Department of Breast Surgery, General Surgery, Qilu Hospital of Shandong University, Wenhua Xi Road No. 107, Jinan, 250012, Shandong, China
| | - Baofeng Liu
- Department of Radiology, Qilu Hospital of Shandong University, Jinan, China
| | - Tingting Ma
- Department of Breast Surgery, General Surgery, Qilu Hospital of Shandong University, Wenhua Xi Road No. 107, Jinan, 250012, Shandong, China
| | - Yeqing Zhou
- Department of Breast Surgery, General Surgery, Qilu Hospital of Shandong University, Wenhua Xi Road No. 107, Jinan, 250012, Shandong, China
| | - Liyu Jiang
- Department of Breast Surgery, General Surgery, Qilu Hospital of Shandong University, Wenhua Xi Road No. 107, Jinan, 250012, Shandong, China
| | - Xiaoyan Li
- Department of Breast Surgery, General Surgery, Qilu Hospital of Shandong University, Wenhua Xi Road No. 107, Jinan, 250012, Shandong, China
| | - Qifeng Yang
- Department of Breast Surgery, General Surgery, Qilu Hospital of Shandong University, Wenhua Xi Road No. 107, Jinan, 250012, Shandong, China. .,Pathology Tissue Bank, Qilu Hospital of Shandong University, Jinan, China. .,Research Institute of Breast Cancer, Shandong University, Jinan, China.
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Zang J, Liu Q, Sui H, Guo H, Peng L, Li F, Lang L, Jacobson O, Zhu Z, Mao F, Chen X. Combined 68Ga-NOTA-Evans Blue Lymphoscintigraphy and 68Ga-NOTA-RM26 PET/CT Evaluation of Sentinel Lymph Node Metastasis in Breast Cancer Patients. Bioconjug Chem 2020; 31:396-403. [PMID: 31880916 DOI: 10.1021/acs.bioconjchem.9b00789] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
In this study, we applied a new strategy to identify sentinel lymph node (SLN) metastasis by combining 68Ga-NOTA-Evans Blue (68Ga-NEB) for SLN mapping and 68Ga-NOTA-RM26 for LN metastasis detection in breast cancer patients. A total of 24 female patients with breast cancer diagnosed by core biopsy or suspected by mammography or ultrasonography were recruited and provided informed consent. All patients underwent 68Ga-NEB and 68Ga-NOTA-RM26 PET/CT imaging. Visual analysis of 68Ga-NEB PET/CT images was used to determine SLNs, and then compared with the 68Ga-NOTA-RM26 results and histopathological findings. SLNs were visualized in 24 of 24 patients (100.0%) within 4.0-10.0 (5.6 ± 1.4) min. All patients were pathologically diagnosed with breast cancer, and 12 patients had ipsilateral lymph node metastasis. By combining 68Ga-NEB and 68Ga-NOTA-RM26 images, 7/12 (58.3%) patients showed mild to intense uptake of 68Ga-NOTA-RM26 in SLNs, 1/12 patient (8.3%) had moderate uptake of 68Ga-NOTA-RM26 in the non-SLNs rather than SLN, indicating possible bypass lymphatic drainage, partially accounting for the false negatives in SLN biopsy during surgery. No false positives were found. The SUVmax of 68Ga-NOTA-RM26 activity in metastatic SLNs was significantly higher than that in non-metastatic SLNs (2.2 ± 2.3 vs 0.7 ± 0.1, P = 0.047). This study manifests the value of combination of 68Ga-NEB and 68Ga-NOTA-RM26 dual tracer PET/CT in preoperative evaluation of SLN metastasis in breast cancer patients, especially in those patients with lymphatic obstruction and bypass drainage. In general, positive 68Ga-NOTA-RM26 uptake in either SLN or other lymph nodes can apply lymph node dissection rather than intraoperative SLN biopsy.
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Affiliation(s)
- Jie Zang
- Department of Nuclear Medicine, Peking Union Medical College Hospital , Chinese Academy of Medical Science and Peking Union Medical College , Beijing 100730 , China.,Beijing Key Laboratory of Molecular Targeted Diagnosis and Therapy in Nuclear Medicine , Beijing 100730 , China
| | - Qingxing Liu
- Department of Nuclear Medicine, Peking Union Medical College Hospital , Chinese Academy of Medical Science and Peking Union Medical College , Beijing 100730 , China.,Beijing Key Laboratory of Molecular Targeted Diagnosis and Therapy in Nuclear Medicine , Beijing 100730 , China
| | - Huimin Sui
- Department of Nuclear Medicine, Peking Union Medical College Hospital , Chinese Academy of Medical Science and Peking Union Medical College , Beijing 100730 , China.,Beijing Key Laboratory of Molecular Targeted Diagnosis and Therapy in Nuclear Medicine , Beijing 100730 , China
| | - Hua Guo
- Department of Nuclear Medicine, Peking Union Medical College Hospital , Chinese Academy of Medical Science and Peking Union Medical College , Beijing 100730 , China.,Beijing Key Laboratory of Molecular Targeted Diagnosis and Therapy in Nuclear Medicine , Beijing 100730 , China
| | - Li Peng
- Department of Breast Surgery, Peking Union Medical College Hospital , Chinese Academy of Medical Science and Peking Union Medical College , Beijing 100730 , China
| | - Fang Li
- Department of Nuclear Medicine, Peking Union Medical College Hospital , Chinese Academy of Medical Science and Peking Union Medical College , Beijing 100730 , China.,Beijing Key Laboratory of Molecular Targeted Diagnosis and Therapy in Nuclear Medicine , Beijing 100730 , China
| | - Lixin Lang
- Laboratory of Molecular Imaging and Nanomedicine (LOMIN), National Institute of Biomedical Imaging and Bioengineering (NIBIB) , National Institutes of Health (NIH) , Bethesda , Maryland 20892 , United States
| | - Orit Jacobson
- Laboratory of Molecular Imaging and Nanomedicine (LOMIN), National Institute of Biomedical Imaging and Bioengineering (NIBIB) , National Institutes of Health (NIH) , Bethesda , Maryland 20892 , United States
| | - Zhaohui Zhu
- Department of Nuclear Medicine, Peking Union Medical College Hospital , Chinese Academy of Medical Science and Peking Union Medical College , Beijing 100730 , China.,Beijing Key Laboratory of Molecular Targeted Diagnosis and Therapy in Nuclear Medicine , Beijing 100730 , China
| | - Feng Mao
- Department of Breast Surgery, Peking Union Medical College Hospital , Chinese Academy of Medical Science and Peking Union Medical College , Beijing 100730 , China
| | - Xiaoyuan Chen
- Laboratory of Molecular Imaging and Nanomedicine (LOMIN), National Institute of Biomedical Imaging and Bioengineering (NIBIB) , National Institutes of Health (NIH) , Bethesda , Maryland 20892 , United States
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