Hypoechoic masses are usually described by ultrasound or CT imaging. According to the return, hypoechoic masses cannot be designated as malignant masses, but they may be benign in the course of some lesions. Hypoechoic masses are generally malignant in the sense that they are disproportionate, nodules are convex and concave, the surface is not smooth, or the blood flow is very rich, including the longitudinal and transverse imbalance is greater than one. Therefore, when a hypoechoic mass is found during a physical examination or checkup, it must be evaluated in the context of its condition and other relevant tests to determine whether it has malignant potential, and not to blindly assume that a hypoechoic mass must be malignant to avoid unnecessary worry and tension.