Abstract
We report the magnetic resonance imaging (MRI) findings in a case of extensive fetal lymphatic malformation involving the upper left arm and axillo-thoraco-abdominal wall found on routine prenatal ultrasound (US) examination at 22 weeks of gestation. MRI clearly reveals the tumor extent and tissue characteristics, and thick-slab T2-weighted MRI has the capacity to provide more information on the cystic lesion on global overview.