BACKGROND:

Fetal lymphangiomas are malformations of the lymphatic system, representing 4% of all vascular tumors in living newborns, with an incidence of 1.2-2.8‰.

CLINICAL CASE:

Two uncommon clinical cases, due to their location and extension, of fetal lymphangiomas are reported. In both patients, the diagnosis was established by ultrasound study, during the third trimester, in low risk gestations. The alteration was not related to additional structural malformations, chromosomal or genetic disorders. Magnetic resonance confirmed the diagnosis of the disease. In one mothers, the size of the fetus determined the route of termination of pregnancy (delivery). Surgery was the treatment of choice, with satisfactory evolution in one patient and the other remains awaiting a new surgical intervention, because it still manifests recurrences. At present, the psychomotor, weigth and size development of the patients is adequate.

CONCLUSION:

Ultrasound is critical for diagnosis and monitoring of this type of malformations.