Dept of Obstetrics and Gynecology, Hôpital Félix Guyon, rue des Topazes, 97400 Saint-Denis, Reunion Island, France. Ph : 0262 90 55 22.

This is a 30-year-old woman G2 P1, with an unremarkable history. Her ultrasound scan at 13 weeks was normal. At 24 weeks of gestation, an isolated right axillary cystic lymphangioma was discovered. No intrathoracic extension was noted. At 30 weeks of gestation a right arm and forearm extension was noted. Theses extension were after stable during the rest of the pregnancy.

Right parasagittal 3D sonogram of the cystic lymphangioma at 26 weeks of gestation. The cyst is in the axillary location and shows no extension into the right hemi-thorax.

The cystic mass is avascular.

2-D ultrasound showing the cystic lymphangioma in close proximity to the thorax

Axial sonogram of the right forearm showing the two lymphangioma cysts at 30 weeks:

Prenatal MRI scan confirmed the findings.

Postnatal photograph of the baby showing the lymphangioma. The baby is currently doing well.