Clinical Significance of Color Ultrasound, MRI, miR-21, and CA199 in the Diagnosis of Pancreatic Cancer

Figure 4

Color ultrasound image of a pancreatic cancer patient. (a) PC stage I: ultrasound showed hypoechoic nodules in the head of the pancreas with irregular shape and ill-defined boundaries, 1.9 × 1.7 cm. (b) PC stage II: ultrasound showed a hypoechoic nodule in the head of the pancreas with irregular shape and ill-defined boundaries, 2.6 × 1.7 cm. (c) PC stage III: ultrasound showed a low-echoing mass in the head and body of the pancreas, with irregular shape, poorly defined boundary, and poorly defined with surrounding tissues, 5.5 × 3.5 cm. (d) PC stage IV: ultrasound showed a hypoechoic mass in the tail of the pancreatic body, with irregular shape, ill-defined boundary, and unclear boundary with surrounding tissue, 6.9 × 4.2 cm, surrounded by adjacent arteries.

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