The most common signs of male breast cancer are a painless lump in the chest or a nipple which has turned inwards , but these are similar to the effects of gynaecomastia , a harmless swelling under the nipple 专家提醒说，男性乳腺癌最显著的症状是在胸部或乳头处出现无痛的肿块，而当出现诸如肿块和肿胀感皮肤凹陷和起皱乳头内陷乳头或者乳房皮肤泛红乳头大小异常或乳头溢液时，就应尽快去看医生。
There is significant difference between them ( p < 0 . 05 ) . [ conclusion ] fiberoptic ductoscopy is the principal technique for nipple discharge without palpable mass , and sometimes it is necessary that patients accept galactography at the same time for reducing misdiagnosis and missed diagnosis 结论乳管内视镜可作为未扪及肿块的乳头溢液患者的首选检查方法，必要时结合乳腺导管造影，减少漏诊及误诊。
