Advances in cryoablation for pancreatic cancer

Figure 4 Percutaneous cryoablation of pancreatic cancer under enhanced computed tomography guidance. The images represent transdorsal approaches. A: The tumor at the head of the pancreas can be seen with high intensity (yellow arrow); B: The probe (green arrow) was inserted percutaneously into the tumor via a transdorsal approach; C: Ice ball formation appears as a dark area (red arrow); D: The size of the ice ball covers the entire area of tumor.