Margaret Boemer went for a routine ultrasound 16 weeks into her pregnancy with her third child. She quickly found out that things were far from routine.
"They saw something on the scan, and the doctor came in and told us that there was something seriously wrong with our baby and that she had a sacrococcygeal teratoma," the Plano, Texas, mom said in an interview shared by Texas Children's Hospital. "And it was very shocking and scary, because we didn't know what that long word meant or what diagnosis that would bring."
Sacrococcygeal teratoma is a tumor that develops before birth and grows from a baby's coccyx, the tailbone.
"This is the most common tumor we see in a newborn," said Dr. Darrell Cass, co-director of Texas Children's Fetal Center and associate professor of surgery, pediatrics and obstetrics and gynecology at Baylor College Medicine. "Even though it's the most common we see, it's still pretty rare."
Found more often in girls than boys, this tumor occurs in one out of every 35,000 births.
Unfortunately, this was not the first bad news of Boemer's pregnancy. Originally, she had been pregnant with twins, but lost one of the babies before her second trimester.
It was a shock at 16 weeks to learn of her daughter's rare birth defect.
"Some of these tumors can be very well-tolerated, so the fetus has it and can get born with it and we can take it out after the baby's born," said Cass. "But about half of the time, they cause problems for the fetus and it's usually causing problems because of a blood flow problem."
Cass explained that the tumor is trying to grow by sucking blood flow from the baby, yet the baby is also trying to grow, too "so it becomes a competition."
"And in some instances, the tumor wins and the heart just can't keep up and the heart goes into failure and the baby dies," said Cass.
With a large tumor stealing the blood supply, Boemer's fetus was becoming more ill each day, doctors explained to the expectant mother. Something had to be done.
Although other doctors had advised her to terminate the pregnancy, Cass and his team told her about another possibility: fetal surgery. This option, though, would not be an easy road. Even worse, her baby's chances of survival would be grim.
"LynLee didn't have much of a chance," Boemer said. "At 23 weeks, the tumor was shutting her heart down and causing her to go into cardiac failure, so it was a choice of allowing the tumor to take over her body or giving her a chance at life.
"It was an easy decision for us: We wanted to give her life."