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Fig. 8A. —Walls of common bile duct in 37-year-old woman with liver transplant. Sagittal conventional sonogram (A) and tissue harmonic image (B) show proximal common bile duct. Note uniform thickening of walls of duct seen on both images. Both lumen of duct and several tiny cystic spaces in small postoperative mass are clearer and blacker on tissue harmonic image.