The doctors at the hospital in Mumbra, near Mumbai, discovered the baby inside his brother’s stomach after he was born.
The half-formed baby was successfully removed and the full-formed baby and his 19-year-old mother are both alive, healthy, and doing well.
It is thought that the bizarre circumstances were part of an incredibly rare ‘Fetus in fetu’ twin pregnancy – which has occurred less than 200 times in history.
Gynecologist Dr Neena Nichlani said: It is a case of monozygotic twin pregnancy sharing single placenta, where one fetus wraps itself around and envelops the other and robs the host of its nutrition.
It can be implanted in skull, abdomen or tail bone of the host. Sometimes it can also lead to the death of the host because both get nutrition from a single cord.
The parasitic baby was lying behind the stomach deriving its nutrition from the host. The parasitic baby has been sent for further testing, reports are awaited.
To make things even more outlandish the baby was only discovered during a routine check of his twin brother nine days after the first birth.
Radiologist Dr. Bhavna Thorat carried out the scan and discovered another unborn baby living inside the stomach of his brother.