患者女,22岁。“发现右乳溢液半月”入院,为单孔溢液,溢液呈淡黄色,不伴局部的红肿、发热、疼痛等特殊不适。超声示:右乳9点方位可见一扩张导管,较宽处内径约2.2mm,乳头旁可及一实性低回声结节,大小约7mm×7.5mm×11.5mm,距皮4.5mm,边界清,内回声尚均匀,CDFI:未探及明显血流信号。查体:双乳基本对称,双乳头居同一水平线上,无内陷及湿疹样变,无橘皮征、酒窝征,按 Female patient, 22 years old. “Found right breast overflow half a month ” admission, single hole discharge, discharge yellowish, without local redness, fever, pain and other special discomfort. Ultrasound showed: 9 o’clock position of the right breast can be seen a dilatation catheter, the wider diameter of about 2.2mm, next to the nipple can be a solid hypoechoic nodules, the size of about 7mm × 7.5mm × 11.5mm, from the skin 4.5mm, border clearance , The echo is still uniform, CDFI: no exploration and significant blood flow signal. Physical examination: the basic symmetry of breast milk, twin head in the same horizontal line, no invagination and eczema-like change, no orange peel sign, dimple sign, press