| Autor: |
M J, Calvo López, E, Vallejos Roca, I, Muñoz Alcántara, F, Navarro Díaz, M V, García Palacios |
| Rok vydání: |
2008 |
| Předmět: |
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| Zdroj: |
Radiologia. 50(6) |
| ISSN: |
0033-8338 |
| Popis: |
To describe the morphological and vascular ultrasound findings of cutaneous melanoma locoregional metastasis, both in lymph nodes and in superficial soft tissues. To see if detection of these findings allows a sure diagnosis.The morphological aspects of melanoma metastasis were evaluated with high-resolution ultrasound, and vascularisation by power color, by means the malignancy criteria previously described.71 loco-regional metastasis were found, in 32 patients: 15 lymph node metastases (21.2%) and 56 soft tissues metastases (78.8%). All of them were histologic confirmation. In 19 cases metastasis were not detected by clinical evaluation. The lymph node metastasis had: low echogenicity (100%) with heterogeneous texture (66.7%); absence of echogenic hilus (93.3%); a ratio between longitudinal and transverse diameters2 in most cases (86.2%); and peripheral or mixed vascularisation (86.6%). A statistic signification (p=0.049) was proved between L/T ratio and vascularisation type. Soft tissues metastases presented: a maximal diameter between 3-27 mm (mean: 6.91); oval or round shape, sometimes lobulate; well-defined margins (100%); low echogenicity (100%); heterogeneous texture (64.3%); and they showed vascularisation even in the smallest lesions (5 mm). A statistic signification (p=0.006) was proved between the size and the vascularisation degree.US findings allow a suspicion diagnosis of melanoma locoregional metastasis even when metastasis was not detected in physical exam. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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