Imaging and clinical approach to incidental prevascular mediastinal nodules

Incidentally found prevascular mediastinal nodules often need magnetic resonance imaging (MRI) problem-solving after contrast-enhanced computed tomography (CT) because cystic lesions can mimic solid tumors; integrating imaging, epidemiology, and clinical/lab data may reduce unne…

• Computed tomography alone may be misleading because cystic prevascular lesions can show soft-tissue attenuation or pseudoenhancement and overlap with solid tumors.
• Magnetic resonance imaging offers superior tissue characterization, including diffusion-weighted imaging and apparent diffusion coefficient values, to distinguish cystic from solid lesions and assess local invasion.
• A stepwise strategy combining imaging with epidemiologic, clinical, and laboratory information can reduce unnecessary invasive procedures.

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