Discrepancy of prenatal findings in a monochorionic monoamniotic twin pregnancy – Infantile myofibromatosis

Introduction: Monoamniotic twin pregnancies are characterized by an increased rate of cord injuries due to entanglement and of prenatal malformations. Case report: A monochorionic monoamniotic pregnancy was diagnosed in a 29 year old woman at 12 gestational weeks. In the second trimester, an echodense tumor was seen on the right side of the head of one twin. Amniocentesis revealed a normal karyogram 46 XX. MRI showed a tumorlike configuration on the right side of the head without connection to the brain ventricles or brain tissue. Within the third trimester, jejunal atresia of the same child was suspected by ult…