A laboratory, pathologist, treating physician, or other healthcare provider may be liable for a missed cancer diagnosis if their negligence caused the error and the patient’s injury. Examples include misreading tissue samples, mixing up specimens, or reporting inaccurate results. A missed diagnosis alone does not establish negligence.
For the patients affected by medical malpractice, identifying where the diagnostic process failed can help clarify their legal options. Medical records, laboratory reports, pathology findings, and expert opinions can help establish whether negligence caused the missed diagnosis. A medical malpractice attorney can review the evidence to assess the patient’s claim.
The Laboratory May Be Liable for Inaccurate Testing
A laboratory may be liable if negligent testing procedures produce inaccurate results. For example, contaminated reagents, incorrect test processing, or faulty testing methods may cause a cancer test to return an incorrect result. These errors can prevent doctors from receiving reliable information to guide diagnosis and treatment.
Under S.C. Code § 40-48-160(B)–(C), clinical laboratory professionals must monitor testing accuracy and provide services consistent with good practice and professional ethics. Laboratory records can help establish whether the laboratory met these standards.
The Pathologist May Be Liable for Misinterpreting Specimens
Pathologists examine tissue samples and other specimens to identify cancer and assess abnormal cells. A pathologist may be liable if they overlook malignant cells, misinterpret cellular changes, or classify cancerous tissue as benign, and that error causes harm to the patient.
Such an interpretation may lead doctors to rule out cancer when further investigation is needed. An independent review of the original slides and pathology report can help determine whether the interpretation fell below accepted professional standards. Under S.C. Code Ann. § 15-36-100(B), a covered professional negligence claim generally requires an expert affidavit identifying an alleged negligent act or omission and its factual basis.
The Treating Physician May Be Liable for Ignoring Symptoms
A treating physician must assess a patient’s symptoms, medical history, and examination findings when considering a possible cancer diagnosis. If symptoms persist or worsen, the physician may need to investigate further rather than dismiss them without adequate evaluation.
For example, failing to investigate unexplained bleeding or a growing lump may delay cancer detection. Liability may arise if the physician’s failure to investigate was negligent and contributed to the patient’s injury.
A Healthcare Provider May Be Liable for Failing to Communicate Results
A healthcare provider may be liable for failing to notify a patient of significant test findings or communicate them to the appropriate clinician. For example, a provider who receives a report identifying suspicious cells may be negligent if they fail to inform the patient or responsible doctor.
This issue concerns the communication of available results, rather than the accuracy of the test or the interpretation itself. Medical records and communication logs can help establish whether the provider fulfilled this responsibility.
A Laboratory or Medical Facility May Be Liable for Specimen Mix-Ups
Specimen mix-ups occur when samples are mislabeled, assigned to the wrong patient, or confused with another person’s specimen. Such errors compromise the connection between a patient’s identity and their test results, potentially leading to an incorrect diagnosis.
Responsibility may depend on whether the mistake occurred during collection, labeling, transport, or processing. Specimen labels and tracking records can help identify where the error occurred and which party was responsible.
A Hospital or Medical Organization May Be Liable for Management Failures
A hospital or medical organization may face liability when poor management contributes to diagnostic failures. Examples include inadequate staffing, insufficient employee training, or a failure to establish clear responsibilities for diagnostic services.
These shortcomings concern the organization’s management and oversight rather than a particular test, interpretation, or specimen. Staffing records, training documents, and internal reviews can help determine whether management failures contributed to the patient’s harm.
Expert Review Can Help Establish Liability
Medical experts can review the evidence to assess whether a healthcare provider breached the applicable standard of care and whether that breach caused the patient’s injury. Depending on the case, experts may evaluate laboratory procedures, pathology findings, clinical decisions, or communication records.
They can also assess whether an earlier diagnosis would likely have changed the patient’s treatment options or outcome. Their opinions can help establish the medical basis of a potential malpractice claim, subject to the legal requirements of the relevant jurisdiction.
Final Takeaways
- Responsibility for a missed cancer diagnosis caused by a laboratory error depends on where the mistake occurred and which party failed to meet the applicable standard of care.
- Laboratories and pathologists may be liable for inaccurate testing, specimen mix-ups, or misinterpreted results.
- Treating physicians may share responsibility if they ignore warning signs or fail to investigate questionable results.
- Hospitals and healthcare organizations may also be responsible when inadequate procedures, communication, or quality controls contribute to the error.
- Medical records, original specimens, laboratory documentation, and expert opinions can help establish liability and determine whether the delayed diagnosis caused preventable harm.
