Table I. —Ultrasound imaging zones and features in lymphedema.
| Anatomical areas | ||
|---|---|---|
| Upper Limb | Arm | Proximal half of the medial quadrant |
| Distal half of the medial quadrant | ||
| Proximal half of the lateral quadrant | ||
| Distal half of the lateral quadrant | ||
| Forearm | Proximal half of the volar quadrant | |
| Distal half of the volar quadrant | ||
| Proximal half of the dorsal quadrant | ||
| Distal half of the dorsal quadrant | ||
| Hand | Dorsum of the hand/fingers | |
| Lower Limb | Thigh | Proximal half of the medial quadrant |
| Distal half of the medial quadrant | ||
| Proximal half of the lateral quadrant | ||
| Distal half of the lateral quadrant | ||
| Leg | Proximal half of the medial quadrant | |
| Distal half of the medial quadrant | ||
| Proximal half of the lateral quadrant | ||
| Distal half of the lateral quadrant | ||
| Foot | Dorsum of the foot/fingers | |
| Sonographic features | ||
| Dermo-epidermal complex | Thickness* | |
| Sonographic pattern | ||
| Subcutaneous tissue | Thickness* | |
| Sonographic pattern | ||
| Extra findings§ | ||
*In patients with fibrotic involution, the dermo-hypodermal junction may not be easily detectable. In that case, the total thickness of (the superficial) soft tissues – from the muscular fascia to the interface between the gel and the stratum corneum of the epidermis – can be measured; §lymphatic lakes, fascial delamination, superficial venous thrombosis, positive color/power Doppler findings compatible with infectious/inflammatory phenomena.