患者女 ,4 0岁。无意中发现左乳内上方有一无痛性包块 ,触之质硬。体格检查 :左乳内上象限可触及大小约 3ｃｍ× 4ｃｍ包块 ,质硬 ,边界清楚 ,活动度良好 ,表面光滑 ,无压痛。Ｂ超提示 :左乳纤维腺瘤。手术所见 :肿块有完整包膜 ,可将肿块完整剥离。病理检查 :肉眼可见 :包块 2 Female patient, 40 years old. Inadvertently found that there is a painless mass in the left breast, which is hard to touch. Physical examination: The left upper quadrant of the breast can reach a size of about 3cm x 4cm, hard, with clear boundaries, good activity, smooth surface, and no tenderness. B-ultrasound: left breast fibroadenoma. Seen from the operation: the tumor has a complete capsule, which can completely peel the tumor. Pathological examination: visible to the naked eye: mass 2