Anatomic changes, such as the dilation of the calyces, renal pelvis, and ureters, that are characteristic of pregnancy may persist as long as 8 weeks postpartum.

• 以前上学时，我们老师老师说过：“6周的产褥期恢复是除外乳腺的”，根据此文，应该加上泌尿系统的。