Doppler ultrasound: This exam appears to be at blood stream by bouncing superior-frequency sound waves (ultrasound) off purple blood cells. It may also help uncover obstructions and rule out other attainable results in of swelling, like blood clots.  This includes surgical excision of lymph nodes, local radiation treatment, or health-related https://sgvasculargrp.com/medical-condition/lymphoedema/