Table 1 The features of DF lesions on conventional MR images
Number of lesions (percentage) | |
|---|---|
Site and origin | |
Anterior abdominal wall | 3 |
Extra-abdominal | |
Neck | 1 |
Chest wall | 1 |
Shoulder girdle and upper arm | 9 |
Forearm and wrist | 3 |
Pelvis and thigh | 21 |
Popliteal fossa and calf | 2 |
Fascia | 6 (15%) |
Muscle | 34 (85%) |
Margins | |
Ill defined | 18 (45%) |
Partially defined | 14 (35%) |
Well defined | 8 (20%) |
Size (ranged from 0.8 to 60 cm in maximum diameter, the mean tumor size 10.7 cm) | |
Signal (Table 2) | |
Low signal bands | 38 (95%) |
Fascial tail sign | 33 (82.5%) |
Extra-compartmental extension | 24 (60%) |
Bone invasion | 7 (17.5%) |
Neurovascular compromise | 19 (47.5%) |