Gigantism occurs in patients that have excessive growth hormone in their bodies during childhood.

巨人症发生在儿童时期体内生长激素过多的患者中。

Now, FOP is pretty rare, but it isn't the only condition that causes excessive growth in your body.

现在， FOP 非常罕见， 但它并不是导致身体过度生长的唯一情况。

With polycystic ovary syndrome, the ovarian follicles secrete too much testosterone, causing hirsutism, or excessive hair growth on the chin and upper lip, chest, and back.

多囊卵巢综合征患者体内的卵巢滤泡分泌过多睾酮，导致多毛，即下巴、上唇、胸部和背部的体毛过度生长。

Cells in this organ's lining constantly renew themselves, but the genes that moderate this process occasionally go awry, leading to the excessive growth of new cells.

大肠内壁的细胞不断地更新，但是调节这个过程的基因有时候会出错，导致新细胞过度增生。