Preoperative evaluation of colorectal cancer using CT colonography, MRI, and PET/CT

Figure 1 Thirty year-old female with liver metastases from colorectal cancer. A: Contrast-enhanced CT scan image. A lymph node metastasis often appears with calcifications, and CT is superior to detect these calcifications; B: Plain CT image. Arrow shows calcification of the tumor. Calcification is often seen in liver metastases; C: Contrast-enhanced CT scan image. Calcification is difficult to detect on contrast-enhanced CT. CT: Computed tomography.