Peripheral nerve tumor (PNT) feature | Comment |
---|---|
Maximum to minimum diameter | Ratio > 3 → neurofibroma |
Shape: round, oval, fusiform | Fusiform → neurofibroma |
Contour: smooth, lobulated | Lobulated → neurofibroma |
Encapsulation: absent, partial, complete | Complete → schwannoma |
Echogenicity: hypo-, iso-, hyper- | Hypoechoic → PNT |
Echo texture: homogenous, heterogenous | Heterogenous → schwannoma |
Cystic changes: absent, focal, partial, | Cystic changes → |
large | schwannoma |
Calcifications: absent, present | Present → schwannoma |
Target sign: absent, present | |
Nerve entrance: not identified, identified | |
Nerve-tumor position: central, eccentric | Central → neurofibroma |
Nerve-tumor transition: clear, poorly defined, infiltrative | Infiltrative → neurofibroma |
Vascularity: increased, normal, decreased | Hypovascular → neurofibroma |
# | Ratio | Shape | Contour | Encapsulation | Echo texture | Nerve position | Nerve transition | Number | Tumor diagnosis |
---|---|---|---|---|---|---|---|---|---|
1 | 5 | Fusiform | Lobulated | Partial | Heterogeneous | Central | Infiltrative | Single | Neurofibroma |
2 | ? | Lobulated | Partial | Heterogeneous | ? | ? | Several | Schwannoma* | |
3 | 6 | Fusiform | Smooth | Whole | Heterogeneous | Central | Poorly defined | Single | Schwannoma |
4 | 6 | Fusiform | Fusiform | None | Heterogeneous | Central | Infiltrative | Several | Neurofibroma |
5 | 8 | Fusiform | Lobulated | Partial | Heterogeneous | Central | Infiltrative | Single | Perineurioma |
6 | > 10 | Fusiform | Lobulated | Partial | Heterogeneous | ? | ? | Single | Perineurioma |
7 | 6 | Fusiform | Smooth | None | Homogenous | Central | Infiltrative | Single | Perineurioma |
8 | 3 | Oval | Smooth | Whole | Heterogeneous | Central | Poorly defined | Single | Schwannoma* |
9 | > 10 | Fusiform | Lobulated | Partial | Heterogeneous | Eccentric | Infiltrative | Single | Neurofibroma |
10 | 5 | Fusiform | Smooth | Whole | Heterogeneous | Central | Infiltrative | Several | Perineurioma |
11 | 1,5 | Oval | Smooth | Whole | Homogenous | Eccentric | ? | Single | Schwannoma* |
12 | 2,5 | Oval | Smooth | Whole | Heterogeneous | Central | Poorly defined | Single | Schwannoma* |
13 | 2,5 | Oval | Smooth | Whole | Heterogeneous | Central | Poorly defined | Several | Neurofibroma |
14 | 4 | Fusiform | Lobulated | Partial | Heterogeneous | Central | Infiltrative | Several | Neurofibroma* |
15 | 1,7 | Oval | Smooth | Whole | Heterogeneous | Eccentric | Poorly defined | Single | Schwannoma |
# | Gender | Age | Side | Nerve | Location | Symptoms & Signs | CMAP amp. (mV) | SNAP amp. (μ V) | Tumor CSA (mm2) | Tumor diagnosis | Other |
---|---|---|---|---|---|---|---|---|---|---|---|
1 | Male | 69 | R | Ulnar | Elbow | AWS | 43 | Neurofibroma | |||
2 | Male | 24 | L | #Radial | Upper arm | W | 0.2 | 4 | 24 | Schwannoma* | NF2 |
3 | Male | 66 | R | Median | Forearm | Æ | 6.9 | 5 | 49 | Schwannoma | |
4 | Male | 16 | L | #Median | Upper arm | WS | 61 | Neurofibroma | NF1 | ||
5 | Female | 26 | R | Ulnar | Forearm | AWS | 0.2 | 0 | 30 | Perineurioma | |
6 | Female | 18 | L | Sciatic | Thigh | AWS | 0.4 | 0 | 109 | Perineurioma | |
7 | Female | 18 | R | Fibular | Knee | AWS | 0 | 0 | 47 | Perineurioma | |
8 | Male | 47 | L | Ulnar | Elbow | M | 7.6 | 3 | 348 | Schwannoma* | |
9 | Female | 58 | R | Median | Forearm | P | 7.6 | 16 | 45 | Neurofibroma | |
10 | Female | 22 | R | Sciatic | Thigh | AWS | 0 | 0 | 97 | Perineurioma | |
11 | Female | 34 | R | Tibial | Ankle | PAWS | 10.6 | 7 | 1250 | Schwannoma* | |
12 | Male | 63 | L | Ulnar | Elbow | L | 8.2 | 5 | 368 | Schwannoma* | |
13 | Female | 52 | R | #Ulnar | Forearm | 6.2 | 12 | 212 | Neurofibroma | NF? | |
14 | Male | 24 | R | #Median | Upper arm | P | 6.3 | 33 | 26 | Neurofibroma* | NF1 |
15 | Female | 33 | L | Tibial | Ankle | L | 92 | Schwannoma |