目的:研究超声引导定位切除乳腺小肿块和淋巴结的临床应用价值。方法:采用超声引导将31例患者的39个肿块和9个淋巴结置入乳腺定位针后进行手术切除,结果:39个肿块和9个淋巴结完整切除,平均肿块直径1.2±0.56cm。术后病理:良性30个(76.9%),恶性9个(23.1%),9个淋巴结中良性6个,恶性3个。结论:超声引导下术前定位操作简便,费用低廉对于切除乳腺微小肿块和腋下淋巴结有重要应用价值。 Objective: To study the clinical value of ultrasound-guided targeted resection of small breast masses and lymph nodes. Methods: Surgical resection was performed in 39 breast masses and 9 lymph nodes of 31 patients with ultrasound-guided placement. RESULTS: Thirty-nine masses and nine lymph nodes were completely resected with an average mass diameter of 1.2 ± 0.56 cm. Postoperative pathology: benign 30 (76.9%), malignant 9 (23.1%), 9 lymph node benign 6, 3 malignant. Conclusion: The preoperative localization guided by ultrasound is simple and convenient, and the cost is very low. It is of great value in resection of small breast mass and axillary lymph nodes.