Twenty-one patients were performed operation. Among them, 14,3,3 and 1 patients were diagnosed as papillary epithelioma, papillomatosis, galactophoritis complicated with phlegmasia granuloma and breast adenosis complicated with comedomastitis in pathology respectively. 手术21例,术后病理诊断乳管内乳头状瘤14例,乳头状瘤病3例,乳管炎伴炎性肉芽肿3例,乳腺腺病合并乳管扩张1例。