Diagnostic value of molybdenum target combined with DCE-MRI in different types of breast cancer
- Authors:
- Published online on: August 14, 2019 https://doi.org/10.3892/ol.2019.10746
- Pages: 4056-4063
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Copyright: © Hu et al. This is an open access article distributed under the terms of Creative Commons Attribution License.
Abstract
Introduction
Breast cancer tends to occur in the epithelial tissue of the breast gland and is one of the most common female malignant tumors (1). Breast cancer has a great impact on women's physical and mental health, and in severe cases, it can even be life-threatening. According to statistics (2), the incidence of breast cancer worldwide is on the rise year by year (3). Since most surgical patients are already in the advanced stage of breast cancer when they visit the doctor, even if the cancerous tissue is removed, breast cancer has a high probability to metastasize (4). Statistical data show that the postoperative recurrence rate of breast cancer patients is high and the five-year survival rate is low at this stage (5). Clinical etiology of breast cancer is not completely clear, so early diagnosis of breast cancer helps patients get timely treatment, thus improving the survival rate of breast cancer patients (6). According to relevant reports, Luminal-A, Luminal-B, Her2-overexpressed and triple-negative breast cancers are four different molecular types, and different molecular types are more conducive for clinicians to choose the best individualized treatment according to the characteristics of different molecular sub-types (7). However, molecular typing depends on relevant pathological tissues. Although pathological tissue diagnosis is the gold standard for clinical staging diagnosis of breast cancer, some patients are still psychologically and physiologically unacceptable (8). With the continuous development and innovation of medical diagnostic technology, imaging technology for clinical diagnosis is also continuously upgraded, and the results of diagnostic coincidence rate and pathological tissue diagnosis are getting increasingly closer (9).
At present, molybdenum target imaging (10), breast ultrasound (11), magnetic resonance imaging (MRI) (12), dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) (13) and positron emission tomography (PET) (14) are new imaging techniques commonly used in clinical diagnosis. However, the breast molybdenum target and other new imaging techniques of DCE-MRI have different limitations (15). Therefore, this study was performed to investigate the clinical efficacy of molybdenum target, DCE-MRI and molybdenum target combined with DCE-MRI in the diagnosis of breast cancer of different types.
Patients and methods
Data collection of the patients
From February 2015 to October 2017, 120 female patients with breast cancer admitted to The First Affiliated Hospital of Zhengzhou University (Zhengzhou, China) were diagnosed with breast cancer through surgery or pathological biopsy, with the age range of 28–67 years and the mean age of 47.46±4.54 years.
The inclusion and exclusion criteria were: i) Only breast cancer patients admitted to The First Affiliated Hospital of Zhengzhou University were included, and all tissue samples were diagnosed as breast cancer after joint examination by general surgery and pathology department (16). No radiotherapy and chemotherapy or other treatment was given. ii) Pregnant women and patients with allergic reaction, claustrophobia and other contraindications to contrast media were excluded. Informed consent forms were signed in advance by patients and their families.
The study was approved by the Ethics Committee of the First Affiliated Hospital of Zhengzhou University.
Instruments and methods
GE Seno molybdenum target mammography machine (purchased from Shenzhen Mercery Electronics Co., Ltd.) was used. Automatic parameters were selected and X-ray exposure was automatically adjusted according to the density of mammary glands. All patients underwent imagings in double nipple caudal position (CC position) and mediolateral oblique (MLO position), with breast being moderately squeezed from left and right. DCE-MRI (Siemens) scanning was performed in 3DT1-weighted sequence axial, with a total of 6 phases (the first phase was plain scanning of the mask, and the following 5 phases were enhanced scanning). Scan parameters: TR/TE: 4.32/1.57 msec, double Angle (FA) 10°, FOV: 34×34 cm, matrix: 448×448, incentive number: 1 time, layer thickness: 1 mm; there was no distance between scan, each scan lasted 1 min and 7 sec, with a total scanning time of 7 min and 2 sec. The contrast enhancement agent gadolinium Gd-DTPA (purchased from ACCDON Inc.) was injected with a dose of 0.1 mmol/kg and a rate of 3.0 ml/sec through the elbow vein.
Significant image features of breast cancer with different types of molybdenum target and DCE-MRI. The significant image features of breast cancer with different types of molybdenum target and DCE-MRI are shown in Figs. 1 and 2.
Statistical analysis
Application of SPSS 17.0 (Beijing Boyizhixun Information Technology Co., Ltd.) software system was used for statistical analysis and χ2 inspection for comparison of accuracy rate of diagnosis. Enumeration data were expressed as [n (%)]. P<0.05 was considered to indicate a statistically significant difference.
Results
General data
General clinical data of the patients are shown in Table I.
Diagnostic efficacy of molybdenum target, DCE-MRI and their combined detection in the diagnosis of different types of breast cancer
Luminal-A breast cancer
The sensitivity, specificity and diagnostic coincidence rates of Luminal-A breast cancer diagnosed by molybdenum target were 84.00, 82.86 and 83.33%, respectively. The sensitivity, specificity and diagnostic coincidence rates of Luminal-A breast cancer diagnosed by DCE-MRI were 90.00, 88.57 and 89.17%, respectively. The sensitivity, specificity and diagnostic coincidence rates of Luminal-A breast cancer diagnosed by molybdenum target combined with DCE-MRI were 98.00, 88.57 and 92.50%, respectively. The sensitivity and diagnostic coincidence rates of Luminal-A breast cancer diagnosed by molybdenum target combined with DCE-MRI were significantly higher than those of Luminal-A breast cancer diagnosed by molybdenum target or DCE-MRI alone. There was no statistical difference in sensitivity and diagnostic coincidence rates of Luminal-A breast cancer diagnosed by molybdenum target or DCE-MRI alone (P>0.05) (Tables II and III).
Table III.Diagnostic efficacy of molybdenum target, DCE-MRI and their combined detection in the diagnosis of Luminal-A breast cancer. |
Luminal-B breast cancer
The sensitivity, specificity and diagnostic coincidence rates of Luminal-B breast cancer diagnosed by molybdenum target were 80.65, 82.02 and 81.67%, respectively. The sensitivity, specificity and diagnostic coincidence rate of Luminal-B breast cancer diagnosed by DCE-MRI were 87.10, 87.64 and 87.50%, respectively. The sensitivity, specificity and diagnostic coincidence rates of Luminal-B breast cancer diagnosed by molybdenum target combined with DCE-MRI were 96.77, 86.51 and 89.17%, respectively. The sensitivity and diagnostic coincidence rate of Luminal-B breast cancer diagnosed by molybdenum target combined with DCE-MRI were significantly higher than those of Luminal-B breast cancer diagnosed by molybdenum target or DCE-MRI alone. There was no statistical difference in sensitivity and diagnostic coincidence rates of Luminal-B breast cancer diagnosed by molybdenum target or DCE-MRI alone (P>0.05) (Tables IV and V).
Table V.Diagnostic efficacy of molybdenum target, DCE-MRI and their combined detection in the diagnosis of Luminal-B breast cancer. |
Her2-overexpressed breast cancer
The sensitivity, specificity and diagnostic coincidence rates of Her2-overexpressed breast cancer diagnosed by molybdenum target were 80.00, 87.00 and 85.83%, respectively. The sensitivity and diagnostic coincidence rates of Her2-overexpressed breast cancer diagnosed by DCE-MRI were 85.00, 88.00 and 87.50%, respectively. The sensitivity, specificity and diagnostic coincidence rates of Her2-overexpressed breast cancer diagnosed by molybdenum target combined with DCE-MRI were 95.00, 88.00 and 89.17%, respectively. The sensitivity, specificity and diagnostic coincidence rates of Her2-overexpressed breast cancer diagnosed by molybdenum target combined with DCE-MRI were significantly higher than those of Her2-overexpressed breast cancer diagnosed by molybdenum target or DCE-MRI alone. There was no statistical difference in sensitivity and diagnostic coincidence rates of Her2-overexpressed breast cancer diagnosed by molybdenum target or DCE-MRI alone (P>0.05) (Tables VI and VII).
Table VII.Diagnostic efficacy of molybdenum target, DCE-MRI and their combined detection in the diagnosis of Her2-overexpressed breast cancer. |
Triple-negative breast cancer
The sensitivity, specificity and diagnostic coincidence rates of triple-negative breast cancer diagnosed by molybdenum target were 78.94, 80.20 and 80.00%, respectively. The sensitivity, specificity and diagnostic coincidence rates of triple-negative breast cancer diagnosed by DCE-MRI were 84.21, 89.11 and 88.33%, respectively. The sensitivity, specificity and diagnostic coincidence rates of triple-negative breast cancer diagnosed by molybdenum target combined with DCE-MRI were 94.74, 88.12 and 89.17%, respectively. The sensitivity and diagnostic coincidence rates of triple-negative breast cancer diagnosed by molybdenum target combined with DCE-MRI were significantly higher than those of triple-negative breast cancer diagnosed by molybdenum target or DCE-MRI alone. There was no statistical difference in sensitivity and diagnostic coincidence rates between the two groups in the diagnosis of triple-negative breast cancer with molybdenum target or DCE-MRI alone (P>0.05) (Tables VIII and IX).
Table IX.Diagnostic efficacy of molybdenum target, DCE-MRI and their combined detection in the diagnosis of triple-negative breast cancer. |
Discussion
The morbidity and mortality of breast cancer are increasing year by year (17). Since the mechanism of breast cancer cannot be clearly explained at present, the key to reduce morbidity and mortality is to accurately diagnose the conditions of breast cancer patients and provide corresponding treatment schemes (18). Medically, specific genotypes are made according to the gene level of breast cancer patients, and treatment plans are made according to different molecular genotypes of breast cancer. Treatment plans and prognosis of breast cancer patients with different molecular genotypes are greatly different (19,20). In this study, molybdenum target, DCE-MRI and molybdenum target combined with DCE-MRI were performed on the patients, respectively, and the examination results were compared with the pathological examination results of the patients, in order to investigate the clinical efficacy of molybdenum target, DCE-MRI and molybdenum target combined with DCE-MRI with different types of breast cancer. First, we analyzed the diagnostic efficacy of molybdenum target, DCE-MRI and their combined detection in the diagnosis of Luminal-A and Luminal-B breast cancer, and found that the sensitivity and diagnostic coincidence rates of Luminal-A and Luminal-B breast cancer were significantly higher than those of molybdenum target or DCE-MRI alone. There were no statistical differences in sensitivity and diagnostic coincidence rates between Luminal-A and Luminal-B breast cancer diagnosed by molybdenum target or DCE-MRI alone. Luminal-A type is common in early breast cancer with low recurrence rate (21), while Luminal-B type with high histological grade is common in older breast cancer patients (22).
It has been reported that there is a certain correlation between histopathology, molecular biology and related imaging features of tumors, indicating that breast cancer with different molecular types has different imaging manifestations (23). However, in the study of Goffin et al (24) on breast cancer diagnosed by molybdenum target combined with DCE-MRI, it was found that the diagnostic coincidence rates of breast cancer diagnosed by molybdenum target combined with DCE-MRI were significantly higher than those of breast cancer diagnosed by molybdenum target or DCE-MRI alone. This is similar to the research results of this study, which to some extent supports our results. Then, we analyzed the diagnostic efficacy of molybdenum target, DCE-MRI, and molybdenum target combined with DCE-MRI in Her2-overexpressed type and triple-negative breast cancer, and found that the sensitivity and diagnostic coincidence rates of Her2-overexpressed type and triple-negative breast cancer diagnosed by molybdenum target combined with DCE-MRI were apparently higher than those of diagnosis with molybdenum target or DCE-MRI alone. There was no statistical difference in the sensitivity and diagnostic coincidence rate between the two groups of Her2-overexpressed breast cancer and triple-negative breast cancer diagnosed by molybdenum target or DCE-MRI alone. It is reported that although molybdenum target is widely used in the screening of breast lesions, it shows poor sensitivity to small lesions located at the edge of the breast, and the sensitivity of molybdenum target to very dense breasts decreases by >40% (25). DCE-MRI, applied to the examination of breast cancer, can better show the hemodynamic characteristics of small breast cancer lesions, but it also has a certain rate of missed diagnosis for small sand-like calcification lesions (26). Clinical studies on tumor lesions detected by DCE-MRI combined with molybdenum target showed that DCE-MRI combined with molybdenum target could significantly improve the clinical diagnosis rate (27). Kriege et al (28) also carried out DCE-MRI, molybdenum target and DCE-MRI combined with molybdenum target detection for breast cancer with different molecular types, and also found that the diagnostic coincidence rates of DCE-MRI combined with molybdenum target for breast cancer were significantly higher than those of the single imaging detection.
In this study, due to the regional limitations of the inclusion of research objects, the experimental results may be biased to some extent. Therefore, we will continue to expand the number of subjects in different regions for this research, and conduct follow-up.
Collectively, the diagnostic efficacy of molybdenum target combined with DCE-MRI in breast cancer with different molecular types is better than that of imaging screening alone, which is of great clinical significance in the development of individualized comprehensive treatment for breast cancer patients and is worthy of wide promotion in clinical practice.
Acknowledgements
Not applicable.
Funding
No funding was received.
Availability of data and materials
The datasets used and/or analyzed during the present study are available from the corresponding author on reasonable request.
Authors' contributions
YH wrote the manuscript. YH and YZ collected and analyzed the general data of patients. JC was responsible for the analysis and discussion of the data. All authors read and approved the final manuscript.
Ethics approval and consent to participate
The study was approved by the Ethics Committee of the First Affiliated Hospital of Zhengzhou University (Zhengzhou, China). Patients who participated in this research had complete clinical data. Informed consent forms were signed in advance by the patients and their families.
Patient consent for publication
Not applicable.
Competing interests
The authors declare that they have no competing interests.
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