Benign endometrioid tumors often have cysts filled with dark blood, so although these are called endometriomas, they are sometimes referred to as chocolate cysts.

良性子宫内膜性肿瘤经常伴随着充满暗血的囊肿，所以尽管被称作子宫内膜异位瘤，它们也常被称为巧克力囊肿。

Rarely, endometrioid tumors can be malignant, and the endometrium-like cells can spread out to other areas including the fallopian tubes and the peritoneal cavity.

子宫内膜样肿瘤也可以是恶性的，且子宫内膜样细胞可以转移到其他部位，包括输卵管和腹腔。

Next are endometrioid tumors which come from endometrium-like cells which is ectopic, meaning they're out of place, because those sorts of cells are usually found in the endometrium.

接下来是子宫内膜样肿瘤，来自出现异位的子宫内膜样的细胞，意思是它们并没有待在原位，因为那类细胞经常在子宫内膜上被找到。