A baby girl was born this morning in Lagos with a rare condition caused by a parasitic twin — an underdeveloped head and an extra arm attached to her stomach. Doctors at Lagos State University Teaching Hospital (LASUTH) performed a successful four-hour surgery to remove the parasitic growth, which was feeding off the healthy baby's blood supply. The mother, 22, had not been aware of the condition during pregnancy. The hospital covered all medical costs, and the baby is recovering well and expected to be discharged soon. Parasitic twin cases are extremely rare, occurring in about 1 in 1 million births.