Cholecystitis vs pancreatitis: pain, Murphy sign, enzymes and complications

Lead with pain location and radiation

The most useful bedside clue is where the pain sits and where it travels. Cholecystitis pain centres in the right upper quadrant or upper middle abdomen, often after a fatty meal, and may radiate to the right scapula or upper back. Pancreatitis pain is usually epigastric or left upper quadrant, steady and severe, and classically radiates straight through to the back.

Positioning can also hint at pancreatitis, as some patients find relief by sitting up and leaning forward. Both conditions cause nausea, vomiting and fever, so these shared symptoms cannot separate them. Older adults with cholecystitis may present with vague weakness or poor appetite rather than classic pain, and fever may be absent.

Use the Murphy sign and laboratory results

A positive Murphy sign occurs when the patient stops a deep breath because pressure under the right costal margin becomes painful as the inflamed gallbladder descends. It supports cholecystitis rather than pancreatitis. Ultrasound is the preferred imaging test, showing gallstones, gallbladder wall thickening or surrounding fluid. White cell counts are often raised.

Pancreatitis is diagnosed when at least two of three features are present: characteristic pain, serum lipase or amylase above three times the upper limit of normal, and typical imaging findings. In uncomplicated cholecystitis, liver tests are normal or mildly raised. Markedly raised bilirubin or enzymes suggest a stone in the bile duct, which can also trigger pancreatitis.

Recognise the gallstone overlap

Gallstones are a leading cause of acute pancreatitis, alongside alcohol use, so the two conditions can exist together. A stone leaving the gallbladder can block the shared duct and inflame the pancreas. For exam reasoning, a patient with known gallstones who develops severe pain radiating to the back and a high lipase should prompt concern for gallstone pancreatitis.

Because of this overlap, a single finding does not exclude the other diagnosis. Jaundice can appear in either when the bile duct is obstructed. Combine pain pattern, Murphy sign, enzymes and imaging rather than relying on one feature, and report changes in pain character, since a shift toward the back may mean pancreatic involvement.

Prioritise the complications of each

Untreated cholecystitis can progress to gangrene, empyema and perforation with peritonitis. Watch for rising fever, worsening or diffuse abdominal pain, a rigid abdomen and signs of sepsis. Care typically includes nothing by mouth, intravenous fluids, analgesia and antibiotics as prescribed, with cholecystectomy as the definitive treatment.

Pancreatitis can cause hypovolaemia, hypocalcaemia, respiratory distress, acute kidney injury, pancreatic necrosis and shock. Priorities include fluid resuscitation as prescribed, pain control, monitoring urine output, oxygen saturation and calcium, and watching for tetany. Flank or periumbilical bruising, known as the Grey Turner and Cullen signs, is uncommon but suggests severe disease.

Work through an original practice scenario

Imagine a hypothetical patient with right upper quadrant pain after a fried meal, pain spreading to the right shoulder blade, and an inspiratory catch on palpation. Lipase is normal. Options include acute pancreatitis, acute cholecystitis, appendicitis and peptic ulcer perforation. Acute cholecystitis fits best because of the location, radiation, Murphy sign and normal lipase.

Now imagine the same patient later reports severe pain boring into the back, the lipase rises sharply, and urine output falls. The picture has shifted toward gallstone pancreatitis with possible hypovolaemia. The nurse reassesses vital signs, measures urine output and escalates promptly to the prescriber under the facility pathway.

Sources and further reading

Merck Manual Professional: Acute cholecystitis. Murphy sign, right upper quadrant pain and scapular radiation, laboratory pattern, ultrasound, complications and atypical presentation in older adults.

Merck Manual Professional: Acute pancreatitis. Epigastric pain radiating to the back, diagnostic criteria with lipase or amylase, gallstone and alcohol causes, Grey Turner and Cullen signs and complications.

MedlinePlus: Acute cholecystitis. Pain after fatty meals, radiation below the right shoulder blade, testing and complications including pancreatitis.