High-frame-rate contrast-enhanced ultrasound findings of liver metastasis of duodenal gastrointestinal stromal tumor: A case report and literature review

Figure 1 Magnetic resonance imaging findings. The lesion is approximately 2.3 cm in the left external lobe. A: T1-weighted image of the nodule showing hypo-intensity; B T2-weighted image of the tumor showing higher intensity; C: Diffusion-weighted image of the tumor showing a higher intensity; D: The lesion presented edge enhancement after reinforcement (white arrows).