Nubbin sign

Nubbin sign (also called as cystic duct sign) is an important sign in a HIDA scan (cholescintigraphy using iminodiacetic acid analogs) that may be seen in cases of gallbladder neck obstruction. The "nubbin" refers to a small amount of radiotracer activity in the cystic duct, with absence of tracer in the gallbladder. It indicates lack of radionuclide uptake into gallbladder and therefore suggests acute cholecystitis.

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Article information

rID: 26230
Section: Signs
Synonyms or Alternate Spellings:
  • cystic duct sign

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