Courvoisier sign (hepatobiliary)
Courvoisier sign or Courvoisier-Terrier's sign states that in a patient with painless jaundice and an enlarged gallbladder (or right upper quadrant mass), the cause is unlikely to be gallstones and therefore presumes the cause to be an obstructing pancreatic or biliary neoplasm until proven otherwise.
See article: pancreatic adenocarcinoma
History and etymology
The sign was described by Swiss surgeon Ludwig Georg Courvoisier in 1890.