Anatomical variants · USMLE Step 1

During a laparoscopic cholecystectomy, a surgeon identifies an accessory bile duct draining directly into the gallbladder. This is most consistent with which anatomical variant?

  1. Duct of Luschka
  2. Double cystic duct
  3. Accessory pancreatic duct
  4. Aberrant right hepatic artery
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Correct answer: Duct of Luschka

The duct of Luschka is an accessory bile duct that may drain into the gallbladder and is a known cause of postoperative bile leak. Recognition during surgery prevents complications.

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