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Fig. 5 | European Radiology Experimental

Fig. 5

From: Breast cancer: comparison of quantitative dual-layer spectral CT and axillary ultrasonography for preoperative diagnosis of metastatic axillary lymph nodes

Fig. 5

Arterial phase dual-layer spectral computed tomography (DLSCT) examination of a woman with a high attenuating lymph node in the right axilla. The lymph node shows high conventional CT HU (a), Δ contrast enhancement (c) (conventional CT (HU) (a) minus virtual non-contrast (HU) (b)), low Z effective (d), high iodine density (e), and spectral slope ((mono-energy 40 keV (f) − mono-energy 100 keV (g))/60 keV). Based on the cutoff values, DLSCT diagnosed the lymph node as metastatic. Axillary ultrasonography (h) described the lymph node as non-suspicious and consistent with silicone uptake from a previously known breast implant leakage. Sentinel lymph node biopsy was negative for metastatic disease but showed significant silicone content

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