Purpose: To evaluate the effectiveness of Bioelectrical Impedance Spectroscopy (BIS) in order to rapidly distinguish malignant vs benign breast masses.
Methods: A total of 622 breast masses from 489 patients were collected from January 2015 to June 2017. Every specimen was evaluated by a breast tissue bioimpedance analyzer (MScan1.0B) followed by morphological examination by pathologists. The results from BIS were compared with the morphological results from pathology (as a gold standard). The specificity and sensitivity of BIS were evaluated and the consistency test was performed.
Results: Compared with the pathology standard, BIS had good sensitivity (92.4%), specificity (96.0%), false positive rate (3.96%), and false negative rate (7.58%). The positive likelihood ratio, negative likelihood ratio, positive predictive value, and negative predictive values of BIS were 23.36, 0.0789, 73.49%, 99.07%, respectively. The kappa value of BIS was 0.794 ± 0.038 in the consistency test.
Conclusion: Compared with the pathology standard, the BIS is an effective, convenient, and economical detection method to quickly differentiate benign and malignant breast masses with high accuracy. It may serve as a potential supplement of intraoperative pathological examinations.
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