ER Misdiagnosis of Gallbladder Pain

Emergency departments run on throughput. On any given shift, the physician is juggling a dozen active patients, a triage board that keeps filling, and a nursing team trying to move the next admission upstairs. A patient who walks in on their own feet, complaining of stomach pain that started after lunch, presents one of the most common chief complaints in the department. Most of those patients are not seriously ill. The reflex working diagnoses — acid reflux, gastritis, viral gastroenteritis, musculoskeletal pain — cover the vast majority of encounters, and the vast majority of those patients do well.

The problem is that acute cholecystitis looks a lot like those diagnoses at first glance. The pain is epigastric or right-upper-quadrant, sometimes dull, sometimes sharp. It often follows a fatty meal, which reinforces the dietary-indiscretion explanation. Nausea is common. Vomiting may or may not be present. Temperature at triage is frequently low-grade or normal. The vital signs look acceptable, the patient is conversational, and the chief complaint on the triage note has already nudged the physician toward a gastrointestinal working diagnosis. From there, the clinical reasoning tends to track the path of least resistance.

The reflex answers are not intrinsically wrong — they are intrinsically common. The error is procedural, not diagnostic: settling on the working diagnosis before the workup has been broad enough to rule out the dangerous competitor. That procedural error is the single most common source of missed-cholecystitis malpractice cases in the emergency department.

A thorough workup for right-upper-quadrant or upper-abdominal pain is not elaborate. It fits inside the standard ER visit and costs little. The Society for Academic Emergency Medicine and the American College of Emergency Physicians both publish guidance consistent with this framework, and the Tokyo Guidelines TG18 provide the diagnostic scaffold that most expert reviewers apply when auditing a chart.

The history establishes whether the pain is food-related, whether it radiates to the back or right shoulder, whether there is a prior biliary colic history, and whether there are gallstone risk factors. The physical examination includes a deliberate attempt to elicit Murphy sign — with the patient taking a deep breath while the examiner palpates under the right costal margin — along with a check for abdominal tenderness, guarding, rebound, and bowel sounds. The laboratory panel includes a complete blood count with differential, liver function tests (bilirubin, alkaline phosphatase, AST, ALT), and a lipase to evaluate for pancreatitis. When the patient is septic-appearing, lactate and blood cultures are drawn. Imaging, when indicated, starts with right-upper-quadrant ultrasound — the American College of Radiology classifies it as the appropriate first-line study for suspected acute cholecystitis.

When the history is suggestive, the exam is suspicious, the labs show a pattern consistent with cholecystitis, and the ultrasound confirms the diagnosis, the patient is admitted for cholecystectomy. When any of those elements is equivocal, the safe move under the guidelines is admission and observation rather than discharge. Discharging a patient with a chief complaint of right-upper-quadrant pain and no imaging is the decision that shows up repeatedly in the malpractice case files.

The Murphy sign has been described in the clinical literature since 1903. It is the eponym attached to a specific maneuver — palpating under the right costal margin while the patient inhales — that elicits pain severe enough to halt the inspiration mid-breath when acute cholecystitis is present. It is not pathognomonic, and its absence does not rule out the diagnosis, but its presence in a right-upper-quadrant pain presentation is highly suggestive and carries substantial weight under the Tokyo Guidelines' local-signs criterion.

In malpractice cases, the problem is almost never a documented negative Murphy sign. The problem is a blank space in the record where Murphy sign should have been addressed. The chart shows a line that reads "abdomen soft, tender right upper quadrant, no rebound" — and nothing about Murphy. The reviewer reads the note as consistent with a brief abdominal exam that did not include the specific maneuver for cholecystitis. A deliberate Murphy-sign check takes thirty seconds. When it is not done, the omission is almost always because the physician has already settled on a non-biliary working diagnosis and the exam was focused accordingly.

The argument that "no documentation does not mean no exam" is sometimes offered by the defense, but it rarely carries weight with a jury when the medical-records standard in the relevant jurisdiction requires physical-exam findings to be recorded. Under the general principle that what is not documented was not done, the gap in the chart becomes an affirmative fact in the case — and when it is paired with an absent ultrasound, the case tends to move toward settlement.

The traditional mnemonic for gallstone risk — the "five Fs," meaning female, fertile, forty, fair, and fat — is shorthand for the classic epidemiologic profile of cholelithiasis, and while it is an oversimplification, it captures several risk factors that a competent history should elicit. A woman of childbearing age with a body mass index in the higher range and a family history of gallbladder disease is statistically more likely to be in the gallstone cohort than a lean young man. That is not determinative, but it is a consideration that belongs in the differential weighting.

Other risk factors matter too. Rapid weight loss, recent bariatric surgery, chronic hemolytic anemia, total parenteral nutrition, certain medications (including ceftriaxone and octreotide), pregnancy, and estrogen therapy all raise the pre-test probability of gallstone disease. A history of prior biliary colic — episodes of upper-abdominal pain after fatty meals that resolved spontaneously — is particularly important, because the current presentation may be the first episode that did not self-resolve. Patients who have been followed for a known gallbladder with stones, and who were told that they would eventually need cholecystectomy, carry a presumption of biliary etiology until proven otherwise.

None of these factors creates a definite diagnosis. What they do is sharpen the pre-test probability estimate that a competent clinician uses when deciding how hard to look for cholecystitis. A high pre-test probability patient with right-upper-quadrant pain should not be discharged without imaging, because the downside of missing the diagnosis is disproportionately severe.

A thorough workup for suspected biliary pain does more than confirm or exclude cholecystitis — it also addresses the adjacent pathology that shares territory and can complicate the picture. Acute pancreatitis is the most important near-neighbor. A gallstone that migrates out of the cystic duct and lodges in the common bile duct or the ampulla of Vater can obstruct the pancreatic duct and trigger pancreatitis, which carries its own mortality profile and its own diagnostic criteria. A lipase more than three times the upper limit of normal, combined with consistent pain, generally establishes the diagnosis of acute pancreatitis. Missing gallstone pancreatitis is its own category of diagnostic error, and it is one of the reasons the lipase belongs on the first laboratory panel in right-upper-quadrant pain.

Choledocholithiasis — a stone in the common bile duct — presents with variable degrees of jaundice, elevated bilirubin, and elevated alkaline phosphatase. When cholangitis develops, Charcot's triad of fever, jaundice, and right-upper-quadrant pain emerges, and the patient progresses rapidly. The workup in this scenario may include magnetic resonance cholangiopancreatography or endoscopic retrograde cholangiopancreatography to define the ductal anatomy, as framed in the American College of Radiology Appropriateness Criteria for suspected biliary obstruction.

A properly broad initial panel — CBC, LFTs, lipase, right-upper-quadrant ultrasound — catches most of these entities at first presentation. A narrow workup focused on ruling out cardiac causes of chest pain, or a discharge based on a chief complaint of reflux, misses them. The width of the initial workup is where the cases are won and lost. The sequencing of ultrasound as first-line and HIDA scan as the confirmatory test when ultrasound is equivocal is set out in detail on the ultrasound and HIDA scan guide, and the consequence of the narrow workup — progression to necrosis — is walked through on gangrenous cholecystitis after a missed diagnosis.

The cognitive literature on diagnostic error in emergency medicine identifies two related biases that appear repeatedly in missed-cholecystitis cases: anchoring bias and premature closure. Anchoring is the tendency to fix on the first plausible diagnostic anchor — usually set by the chief complaint, the triage note, or the first few minutes of the history — and to weight subsequent information against that anchor rather than revising it. Premature closure is the tendency to stop the diagnostic workup once the anchor feels confirmed, rather than deliberately considering what else could cause the presenting picture.

Both biases are well-described, and both are trainable problems rather than personal failings. Structured diagnostic-reasoning interventions — forced differential generation, deliberate reevaluation of the working diagnosis against the full history, and mandated consideration of the "most dangerous miss" on the differential — are published strategies for reducing the error rate. ER systems that build these steps into the workflow see fewer bounce-backs. ER systems that rely on the intuitive judgment of individual clinicians under time pressure continue to produce the pattern cases.

In the malpractice analysis, the presence of anchoring bias in the chart is itself part of the evidentiary picture. When the triage note reads "GERD flare" and the physician's history-of-present-illness mirrors that framing word-for-word, the reviewer can see the anchor being set and never revised. The absence of a documented differential — no mention of cholecystitis as a consideration, no mention of why it was ruled out — tends to confirm that the consideration never happened in the first place.

A malpractice chart review for a missed-cholecystitis case is a forensic exercise. The reviewer reads the triage note first — the time of arrival, the vital signs, the chief complaint as the patient described it, and the nursing assessment. Next comes the physician's history and physical, which should include a deliberate differential, a documented Murphy-sign check, and a reasoned statement of why imaging was or was not ordered. The laboratory orders and results are reviewed for completeness — was a CBC ordered, was a full liver panel ordered, was lipase included. Imaging is reviewed for whether anything was ordered and, if so, how it was interpreted.

Medications administered in the department often reveal the working diagnosis more clearly than the chart text. A GI cocktail, an antacid, an antiemetic, and a proton pump inhibitor are the signature of a suspected reflux workup. An ondansetron plus intravenous fluids is the signature of a suspected gastroenteritis workup. Ketorolac or morphine suggests the physician recognized the pain was beyond a minor discomfort, but neither changes the diagnostic picture if imaging was not ordered.

Discharge instructions are the final layer. Vague instructions — "follow up with your primary care physician in a few days, return if symptoms worsen" — are common in the pattern cases. Specific instructions tailored to an actual differential — "return immediately for fever, jaundice, or worsening right-upper-quadrant pain; we could not obtain imaging tonight and you should have an ultrasound within twenty-four hours" — suggest a more deliberate workup and are less common in the chart-review cases. The entire record, read as a single document, typically makes the standard-of-care analysis straightforward for a qualified expert.

Not every missed diagnosis is malpractice. A patient who presents with atypical symptoms, a patient whose exam truly is benign at first presentation, and a patient whose initial laboratory values genuinely do not suggest the eventual diagnosis can all be appropriately discharged and still progress. The malpractice analysis is not whether the diagnosis was made. It is whether the workup met the standard of care for a reasonably prudent emergency physician evaluating the presenting picture.

The analysis turns on four questions. Was a deliberate differential documented that included cholecystitis as a consideration? Was the physical examination complete, including Murphy sign? Were the appropriate laboratory studies ordered — CBC with differential, LFTs, lipase? Was imaging either ordered, or, if not ordered, was the decision not to image documented with a defensible clinical rationale? When the answer to all four questions is yes and the patient still progressed, the case is generally not viable. When one or more answers is no, the deviation is identifiable, and the downstream harm — the gangrenous gallbladder, the perforation, the sepsis — is the measure of damages.

For more on how the progression from a missed diagnosis unfolds and the case value associated with each stage, see our explainer on gangrenous cholecystitis and the missed-diagnosis pattern. For the underlying mini-hub that frames this pattern in the broader context of gallbladder-malpractice claims, see delayed diagnosis of cholecystitis.