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A 67-year-old woman with dropped gallstones (case 4). Several gallstones were seen in the distended gallbladder with a thickened wall on noncontrast CT (a: arrows). The mass containing 2 calcified foci, which invaded the surrounding soft tissue, was observed next to the right rectus abdominal muscle on noncontrast CT at three months after the surgery (b: arrow). The mass decreased in size, and one of the calcifications disappeared on noncontrast CT 6 months after the surgery (c: arrow).
