The case of a capillary-venous malformation in the labia majora of a 1
2-year-old girl is reported. The tumour increased in volume with puber
ty. The authors present a differential diagnosis between immature haem
angioma and vascular malformation. The diagnosis is based on clinical
examination, ultrasound, nuclear magnetic resonance, arteriography and
gynaecological exploration. This malformation can be excised locally.