Fibrosis of lactiferous ducts and suspensory ligament causes retraction, or pulling in of the nipples.

这是由于输乳管和悬韧带纤维化导致皮肤受到牵拉。

First, the tumor causes local inflammation, which causes damage to the suspensory ligaments and lactiferous ducts, resulting in their fibrosis.

首先，肿瘤可能导致局部炎症，会导致悬韧带和输乳管受损，继而纤维化。

Also, cancer cells from DCIS can migrate along the lactiferous duct and through the pore, onto the skin over the nipple.

但有时，DCIS的肿瘤细胞会沿输乳管迁移，穿过乳头到表皮。

Wrapping around the alveolus are special myoepithelial cells that squeeze down and push the milk out of the lumen of the alveolus, down the lactiferous ducts, and out one of the pores on the nipple.

腺泡外是一层特殊的肌上皮细胞，会推挤乳汁离开腺泡管腔进入乳腺导管并从乳头的毛孔分泌而出。