The First Sentinel For Precise Diagnosis Of Breast Cancer

https://www.mayoclinic.org/tests-procedures/breast-biopsy/about/pac-20384812

In the diagnosis and treatment of breast diseases, ultrasound-guided breast biopsy has become an indispensable core step. Faced with the increasing prevalence of breast nodules and masses, clinicians urgently need a diagnostic method that can accurately locate lesions while minimizing patient trauma. Ultrasound-guided biopsy is one of the most mature solutions currently available.

Breast lesions often exhibit diverse morphologies, with some lesions located deep within the body or being small and difficult to palpate. Traditional blind biopsies rely on the doctor's experience and are prone to sampling errors. Real-time ultrasound imaging technology allows doctors to clearly see the lesion boundaries, internal echo characteristics, and relationship with surrounding tissues and blood vessels on the screen. This enables precise planning of the needle insertion path during ultrasound-guided breast biopsy, avoiding important structures and accurately delivering the needle to the target area.

Depending on the nature of the lesion, different types of biopsy needles are commonly used clinically. For cystic lesions, fine-needle aspiration (FNA) is typically used, with needles typically ranging from 21G to 25G, resulting in minimal trauma. For solid masses, core-needle biopsy (CNB) is more commonly used, with 14G to 18G needles to obtain sufficient tissue strips for pathological analysis. Some advanced applications utilize vacuum-assisted biopsy (VAB) systems, which have slightly larger needle diameters but allow for larger sample volumes, particularly suitable for assessing microcalcifications.

In ultrasound-guided breast biopsy, the choice of needle material directly impacts the operative experience and patient prognosis. Stainless steel needles, due to their high strength and corrosion resistance, are often used in reusable instruments; titanium alloy needles, with their lighter weight and excellent biocompatibility, are more advantageous for prolonged, delicate procedures; disposable medical polymer needles effectively avoid the risk of cross-infection, meeting modern infection control requirements.

Besides differentiating between benign and malignant lesions, ultrasound-guided breast biopsy also plays a crucial role in monitoring treatment efficacy. Patients undergoing neoadjuvant chemotherapy may undergo a follow-up biopsy during the mid-treatment phase to dynamically monitor tumor cell necrosis, providing a basis for subsequent treatment adjustments. Furthermore, the obtained tissue samples can be used for molecular marker detection such as ER, PR, HER2, and Ki-67, providing decision support for endocrine therapy and targeted therapy.

With the increasing popularity of early screening and diagnosis for breast cancer, the application scenarios of ultrasound-guided breast biopsy are constantly expanding-from confirming suspicious masses to assessing microcalcifications, investigating the causes of nipple discharge, and following up with high-risk groups. This technology can be considered both the "eyes" of clinical decision-making and the "first line of defense" for patients towards precision treatment.