Insufficiency of the cisterna chyli may result in chyloperitoneum, chyluria, chyloedema of the lower limbs and rarest of all--chylous metrorrhagia. One case of the latter complication is fully described and one other briefly mentioned. Both were treated by excision of all the dilated lymphatics around the vena cava and iliac veins with good results. Both cases showed lacunae in the flat bones which may be related to the lymphatic dysplasia.