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Floating stones in a nonopacified gallbladder: Ultrasonographic sign of gas-containing gallstones


Floating stones were noted in the nonopacified gallbladder at ultrasound examination. Gas-containing fissures in these stones could be demonstrated pre- and postoperatively (Mercedes Benz sign).

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Strijk, S.P., Boetes, C. & Rosenbusch, G. Floating stones in a nonopacified gallbladder: Ultrasonographic sign of gas-containing gallstones. Gastrointest Radiol 6, 261–263 (1981).

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Key words

  • Floating gallstones
  • Ultrasound
  • Gallbladder
  • Mercedes Benz sign
  • Fissured gallstones