Why Radiologists Get Sued: The Breast Cancer You Missed and the Critical Finding You Didn't Phone In

By John Mahoney · June 2026 · 9 min read

Radiology is a quieter malpractice specialty than the surgical fields — lower claim frequency, below-average payouts, and a majority of claims that close with no money changing hands. But for the med-mal attorney, that profile is precisely what makes radiology cases distinctive and, when they are real, dangerous. Two things drive almost everything: a finding that was on the film and was not seen, and a finding that was seen but never communicated to the person who could act on it. This guide explains why radiologists get sued, which misses recur, and what separates a strong radiology case from one that should never be filed.

Disclaimer: This article is for informational purposes only and does not constitute legal advice. The closed-claims figures cited here are drawn from medical-malpractice insurer and registry reports; they describe reported patterns and are not a substitute for case-specific expert review.

The Frequency and Severity Reality

Radiology sits in the low-to-medium band for claim frequency. In the Jena et al. data, roughly 7.2% of radiologists faced a claim in a given year — slightly below the all-physician average — though cumulative career exposure remains high in absolute terms. Per-claim severity is also below average: reported mean indemnity for radiology has run around $237K, under the all-specialty mean, and a clear majority of claims (reported around 62%) close without any payment.

The exception runs in two directions. First, when a radiology claim does succeed, the harm is severe — roughly 80% of diagnosis-related radiology claims have involved serious permanent injury or death, because the missed finding is usually a cancer or a vascular catastrophe. Second, interventional radiology carries materially higher per-claim payouts than diagnostic radiology (reported IR mean near $588K versus roughly $300K for diagnostic). So the screening posture is counterintuitive: many radiology claims are defensible, but the ones that survive are high-severity, and the IR cases are a different, higher-exposure animal.

The Dominant Allegation: Diagnostic Error

Radiology is the cognitive specialty in its purest form — the work product is an interpretation. Diagnosis-related allegations are the dominant category, reported at roughly 57% of radiology claims in one study and as high as 67% of diagnostic-radiology claims in another. For interventional radiology the picture flips toward procedure-based allegations (improper performance of a procedure leads at around 59%, with post-procedure-complication management a secondary category).

There is a third, smaller, but legally pivotal category: failure or delay in communicating results. As a named primary allegation it is rare — on the order of 1%. But it is disproportionately represented among the claims that actually pay. That gap between how often communication failure is pled and how often it drives indemnity is the single most important thing for an attorney to understand about radiology litigation.

The Cannot-Miss Findings

The recurring missed diagnoses in radiology track the cross-specialty "Big Three" — cancers and vascular events especially — with fractures filling out the list because plain-film misses are so common:

• Breast cancer. The single most frequently missed diagnosis in radiology, driven by mammography misreads. Reported at roughly 3.57 claims per 1,000 person-years, it is the prototypical radiology case.
• Fractures — nonspinal and spinal. Missed or occult fractures on plain film are among the most common claims (reported around 2.49 and 1.32 claims per 1,000 person-years, respectively).
• Lung cancer. The missed nodule on chest X-ray or CT — and, just as often, the incidental pulmonary nodule that was reported but never followed up.
• Vascular disease. Aortic aneurysm and dissection, pulmonary embolism, and similar catastrophes — low frequency, high severity.
• Spinal epidural abscess and intracranial conditions. Missed bleed, missed stroke, missed abscess — recurring high-severity misses. Cancers overall account for a large share (reported around 44%) of diagnostic claims.
• Interventional injury. Vascular injury during a procedure, bleeding, perforation, and retained devices on the IR side.

For intake screening, the presence of one of these findings on a retrospectively reviewable study, plus a documented delay in diagnosis, is the high-merit signal. The defensibility question is whether the finding was actually perceptible on the original study to a reasonable radiologist reading under standard conditions.

The Contributing Factors That Actually Drive Payment

The reported contributing-factor data for radiology point to a tight cluster of drivers:

• Misinterpretation and cognitive error in image reading is the dominant factor, cited in roughly 78% to 80% of diagnosis-related radiology claims. This covers both perceptual misses (the finding was not seen) and interpretive errors (it was seen but called benign).
• Communication failures among providers — particularly failure to directly notify the ordering physician of a critical or unexpected finding — appear in roughly 18% of diagnosis-related cases. Uncommon as the named allegation, but strongly correlated with paid outcomes.
• Failure of follow-up and results-tracking systems for incidental findings (the lung or liver nodule that recommends follow-up that never happens) is a recurring system fingerprint.
• Documentation deficiencies and technical-skill issues are secondary in diagnostic radiology but more prominent in interventional work.

This is the radiology version of a theme that runs through every cognitive specialty: communication and documentation are the payout-drivers, not the liability theory. A perceptual miss alone is a defensible problem — reasonable radiologists miss subtle findings, and a single miss does not establish negligence. But a finding that was identified and then not phoned in, with no timestamped record of notification, converts a defensible read into a paid claim. The American College of Radiology's actionable-findings guidance — documented, direct, read-back communication of urgent and unexpected findings — exists precisely because the uncommunicated critical result is the recurring failure mode. For attorneys, the report's audit trail is the case.

Strong Case vs. Weak Case in Radiology

What makes a radiology case strong

• A perceptible finding on a reviewable study. The finding has to have been visible on the original images to a reasonable radiologist. Retrospective "satisfaction of search" — it's obvious now that you know it's there — is the defense's favorite rebuttal, so the strong case is one where independent readers agree the finding was actionable on the original.
• A documented communication failure. A critical or unexpected finding that was identified and not directly communicated, with no notification log, is the highest-value radiology fact pattern because it pairs a clear deviation with a clean causal link to the delay.
• A broken follow-up loop. An incidental finding with a recommended follow-up that the system never closed — this is the most actionable systemic signal and often implicates more than the radiologist.
• Clean causation on the window. A missed cancer only pays if earlier diagnosis would have changed the stage, treatment, or survival; the strong case shows the treatable window was open.

What makes it weak — the defense view

• A genuinely subtle finding that independent radiologists, reading prospectively under normal conditions, would also have missed. A single perceptual miss is within the standard of care.
• A documented, timely communication of the finding — once the read was correct and the result was conveyed, downstream failures shift away from the radiologist.
• A causation gap. If the cancer was already advanced or the outcome unavoidable, the miss does not translate into damages.

The reading expert who supports your standard-of-care theory today is the expert the other side will move to exclude tomorrow, so build the opinion to survive scrutiny. The reliability questions that justify the certificate of merit feed straight into a later Daubert and FRE 702 challenge — the perceptibility of the finding and the soundness of the reviewing methodology are litigated twice.

Bottom Line

Radiologists get sued less often than surgeons and pay less per claim — but the claims that succeed are severe, because the missed finding is almost always a cancer or a vascular catastrophe. The two engines of liability are perceptual and interpretive error in the read, and the failure to communicate a critical finding to the person who could act on it. The strongest cases pair a finding that was genuinely perceptible on the original study with either a documented communication failure or a broken follow-up loop, and a causal window that was open. The weakest are subtle misses that any reasonable radiologist would share, communicated in time. For both sides, the report and its audit trail are where the case is won or lost.

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