Indian doctors have successfully removed "parasitic twins" or two foetuses that were growing inside the abdomen of a 20-day-old baby.
Called foetus in foetu, the condition is extremely rare, with fewer than 200 cases being reported worldwide until now, a handful of them from India.
The condition develops early in pregnancy where a malformed foetus is absorbed by the host twin. Though the foetus isn't alive, it continues to develop by absorbing nutrients from the host twin - hence the name "parasitic twin".
In this case, the woman was pregnant with triplets and two of the foetuses began to grow inside the abdomen of the baby.
"The surgery was challenging but the baby is healthy and doing well," Dr Anand Sinha, a paediatric surgeon who led the operation, told the BBC.
