Confusable diagnoses · PANCE / PANRE

Cholelithiasis and Biliary Colic vs Choledocholithiasis and Ascending Cholangitis

Cholelithiasis and Biliary Colic and Choledocholithiasis and Ascending Cholangitis are easy to mix up on the boards. Here's a side-by-side comparison — presentation, workup, imaging, and first-line treatment — drawn from our full outlines.

Cholelithiasis and Biliary Colic vs Choledocholithiasis and Ascending Cholangitis at a glance

  • Cholelithiasis and Biliary Colic: Gallstones in the gallbladder; transient cystic duct obstruction causes episodic RUQ pain.
  • Choledocholithiasis and Ascending Cholangitis: CBD stones cause obstructive jaundice; superimposed infection produces ascending cholangitis.
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Side-by-side comparison

FeatureCholelithiasis and Biliary ColicCholedocholithiasis and Ascending Cholangitis
At a glanceGallstones in the gallbladder; transient cystic duct obstruction causes episodic RUQ pain.CBD stones cause obstructive jaundice; superimposed infection produces ascending cholangitis.
Classic presentationPostprandial RUQ pain after fatty meal, lasting 1-5 h, recurrent over weeks to months, with gallstones on US.; Episodic, postprandial (especially after fatty…Charcot triad (fever + RUQ pain + jaundice) in any patient with gallstones — assume cholangitis until proven otherwise; this is a surgical/endoscopic…
Workup / key labsCBC, BMP, LFTs — all typically normal in uncomplicated biliary colic; Lipase — exclude pancreatitis; Elevated bilirubin or alk phos raises concern for CBD…ASGE risk stratification for CBD stones (2019): High probability (any 1 of: CBD stone on imaging; total bilirubin >4 mg/dL WITH a dilated CBD; or clinical…
ImagingRUQ ultrasound — first-line; sensitivity >95% for gallstones >5 mm; identifies gallbladder wall, CBD diameter, signs of cholecystitis; MRCP — for suspected…RUQ ultrasound — first-line; identifies gallstones, dilated CBD (>6 mm in patients <60, >8 mm post-cholecystectomy), but sensitivity for CBD stones only…
First-line treatmentAsymptomatic cholelithiasis — observation; NO routine cholecystectomy; Symptomatic cholelithiasis (biliary colic) — elective laparoscopic cholecystectomy;…Resuscitation: IV fluids, hemodynamic support; Broad-spectrum IV antibiotics covering Gram-negative and anaerobes — piperacillin-tazobactam, ceftriaxone +…

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Educational use only. This outline is a study aid for PA students and is not medical advice or a substitute for clinical judgment. FirstPassPA is an independent study tool and is not affiliated with, endorsed by, or sponsored by NCCPA. PANCE® and PANRE® are registered trademarks of the National Commission on Certification of Physician Assistants.