The amniotic sac is an opaque bubble that covers all babies in the womb from right after conception.
Screengrab from video uploaded by CNN
Silas Philips became famous even before he stepped out of the hospital after birth. That's because of his rare birth - he was born completely encased in his amniotic sac, said Los Angeles' Cedars-Sinai Medical Center in a Facebook post. According to CNN report, even doctors delivering babies hardly see it.
'Even though it's a cliche -- we caught our breath,' neonatologist William Binder told CNN affiliate KCAL. 'It really felt like a moment of awe.'
Silas was born three months before his due date via Caesarean section.
'It was definitely like a clear film, where you could definitely make out his head and his hair,' his mother, Chelsea Philips told the affiliate.
The amniotic sac is an opaque bubble that covers all babies in the womb from right after conception. As the baby grows, it fills with fluid. To have the entire baby inside the sac, or 'en caul,' occurs in less than one in 80,000 births, Cedars-Sinai said.
When Philips heard how rare her Baby's birth was, she told CNN affiliate KCAL. 'I was like, oh my gosh, Silas, you're a little special baby.'