Myelomeningocele in one neonate from a fraternal triplet birth: Two case reports on neurosurgical and multidisciplinary treatment during the perinatal period

•Clinical courses of myelomeningocele in triplet pregnancies are not well known.•Triplets have a higher risk of low birth weight and congenital malformations.•Perinatal management including neurosurgery of a triplet with MMC is challenging.•A birth of triplet affected babies overwhelm perinatal medical departments.•Cooperation within multidisciplinary medical team can result in favorable outcome.