The boy who ‘swallowed’ his twin

It weighs 700 grams and is 25 centimeters long.
Dr Carlos Astocondor, of the medical team at Las Mercedes Hospital in the northern port of Chiclayo, says the condition occurs in about one of every 500 000 live births.
Identical twins form when an egg splits in half after fertilisation.
But conjoined twins or foetus-in-foetu siblings, as in the case of Isbac, occur when the egg fails to fully separate.
Dr Jonathan Fanaroff, a neonatologist at Rainbow Babies and Children’s Hospital in Cleveland, said some conjoined twins can survive as “parasites”, but not when one twin absorbs the other.
He told ABC News that the operation to remove Isbac’s twin was likely to be far easier than attempting to separate two living conjoined siblings. – Daily Mail.