Compressible non ascularized reflectie material in a widened lactiferous duct. Puncture reealed only signs of infection but no papilloma or carcinoma.

• 扩张的输乳管可压缩，其内有无血流信号的低回声物质，穿刺显示仅有感染征象，无乳头状瘤或癌。