Evaluation of Pectoralis Muscle Invasion in Breast Cancer Patients by an Add-on Sonography

Abstract

Mammography and sonography are standard methods for breast cancer screening and diagnosis. This  retrospective descriptive study aimed to evaluate the accuracy of an add-on sonographic technique in breast  cancer patients with pectoralis muscle invasion in Buddhachinnaraj Phitsanulok hospital during May 2015 to  September 2017. There were 55 breast cancer patients. An add-on sonographic technique showed positive  results for pectoralis muscle invasion in 20 patients (36.4%) and negative results in 35 patients (63.6%). While  surgical findings and pathological reports showed pectoralis muscle invasion in 16 patients (29.1%) and no  muscle invasion in 39 patients (70.9%). Sensitivity, Specificity, PPV, NPV and Accuracy of the add-on  sonographic technique are 100.0%, 89.7%, 80.0%, 100.0% and 92.7%, respectively. In conclusion, an add-on  sonographic technique has high accuracy to evaluate pectoralis muscle invasion in breast cancer patient