Question: A 70-year-old man presented to the outpatient clinic with a 4-cm stone that he described to have been expelled from a wound in his abdomen, after experiencing a bout of colicky abdominal pain. The stone was ovoid-shaped, hyperpigmented, solid, and measured approximately 4 cm in length (Figure A). He was afebrile and on physical examination, he was alert and comfortable. There was an 0.5-cm wound in the right hypochondrium (Figure B). It was clean, with no signs of infection, and no pus was expressed.