When a young and excited mom was expecting her second baby, she was shocked to learn that he might have Down syndrome. However, when she and her husband were offered the choice of abortion, they both knew in their hearts that it was not an option and they’d love their baby no matter what his diagnosis was. Five years on, their little son is thriving and has brought more joy to their family than they ever dreamed possible. Third-generation immigrant and engineer Lisi Lopez, 30, met her husband in college. They tied the knot a few months after their graduation. Although Lisi’s husband was in medical school, the couple started planning for kids with the loving support of their “big, loud Latin families.” Eight years on, Lisi and her husband are proud parents to a daughter and two sons. Their middle child, Leo, who turns 5 in April, also happens …