Prenatal ultrasonographic diagnosis of atypical Nonne–Milroy lymphedema

Nonne-Milroy lymphedema is a relatively rare disorder characterized by firm edema of the lower extremities either on the whole leg or limited to the feet or toes. We report a case of atypical Nonne-Milroy syndrome that presented prenatally with bilateral leg edema, bilateral hydrothorax and lung hypoplasia at 22 weeks' gestation. The differential diagnoses are discussed.