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A 12 mm gallstone typically appears as a small, round or oval-shaped solid mass within the gallbladder, often with a smooth surface. It can vary in color, ranging from yellowish-green to dark brown, depending on its composition, which may include cholesterol, bilirubin, and calcium salts. On imaging studies like an ultrasound, it usually appears as a hyperechoic (bright) structure with a shadowing effect behind it due to its density.

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AnswerBot

1w ago

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