Case guide

UPDATED FEB 2026

Pathology Malpractice

Part of the Medical Malpractice investigation

The short answer

Pathologists examine tissue specimens, biopsy samples, and cytology slides to diagnose cancer and other serious conditions. A pathology misread — calling cancer benign, or misidentifying the grade of a cancer — can delay life-saving treatment and allow a curable disease to progress to a terminal one.

Pathology errors are particularly devastating because tissue diagnosis is considered the definitive 'gold standard' of cancer diagnosis.

People's Justice Research TeamUpdated February 20, 2026Fact-checked

Verified against court and regulatory records · No upfront fees · Your information is never sold

Free Case Review

Check your eligibility — free

Answer 2-3 quick questions to review your potential case.

Free · Confidential · About 2 minutes · A case specialist responds within 1 business day

Your answers are never sold or shared without your consent.

The Pathologist's Role and Standard of Care

Pathologists interpret microscopic tissue specimens to render diagnoses of cancer, pre-cancerous lesions, infectious disease, and other conditions. Their reports are the definitive diagnostic basis for cancer treatment decisions — whether a patient receives surgery, radiation, chemotherapy, or watchful waiting often depends entirely on the pathology report. The standard of care requires rigorous specimen handling, adequate sampling, appropriate staining techniques, consultation with subspecialist pathologists for rare or ambiguous cases, and clear, actionable reporting.

Types of Pathology Errors

False negative pathology errors — calling a malignant specimen benign — are the most common and most consequential. A prostate biopsy read as benign when it contains Gleason 8 or 9 cancer delays treatment and allows the cancer to metastasize. A cervical biopsy read as mildly dysplastic when it is actually invasive carcinoma results in inappropriate conservative management. Specimen mix-up errors — where the tissue from Patient A is processed with the label of Patient B — can result in one patient receiving unnecessary cancer treatment and the other receiving no treatment for a cancer they actually have. Grading errors — identifying the correct cancer type but misclassifying its aggressiveness — can lead to inadequate treatment intensity and disease progression.

Key data

Data & Statistics

1 SOURCED FIGURE

A review of 6,171 biopsies found 11.8% had some discordance when re-reviewed by a subspecialist pathologist

JAMA Internal Medicine (Glass & Maddox)

FAQ

Frequently Asked Questions

12 QUESTIONS

Medical malpractice occurs when a healthcare provider — physician, surgeon, nurse, hospital, or other licensed provider — deviates from the accepted standard of care and that deviation causes preventable harm to a patient. The standard of care is defined as what a reasonably competent provider in the same specialty would have done under the same or similar circumstances. Malpractice is not simply a bad outcome — medicine involves inherent risks, and a patient can suffer a serious complication even with perfectly delivered care. To be malpractice, the provider must have acted negligently: doing something a competent provider would not have done, or failing to do something a competent provider would have done.

Dive deeper

Related Guides

24 GUIDES

The full investigation

Part of the Medical Malpractice Investigation