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Memorial Sloan Kettering Cancer Misdiagnosis Claims

Excerpt: Memorial Sloan Kettering is the world's oldest and largest private cancer center. But even at MSK, diagnostic and pathology errors can lead to delayed cancer diagnosis, wrong treatment, or catastrophic outcomes.

Table of Contents

1. About Memorial Sloan Kettering
2. Types of Cancer Misdiagnosis at MSK
3. Pathology Errors: The Foundation of Cancer Diagnosis
4. Radiology Errors: Misread Imaging at MSK
5. Failure to Follow Up on Abnormal Results
6. Delayed Referrals and Second Opinions
7. Wrong Cancer Diagnosis and Wrong Treatment
8. Genetic Testing Errors
9. Who Can Be Held Liable?
10. Statute of Limitations and Legal Deadlines
11. Preserving Evidence at MSK
12. Frequently Asked Questions

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About Memorial Sloan Kettering

Memorial Sloan Kettering Cancer Center (MSK) is the world's oldest and largest private cancer center. Founded in 1884, MSK is consistently ranked among the top cancer hospitals in the United States. With its main campus on the Upper East Side of Manhattan and outpatient facilities across New York City, New Jersey, and Westchester, MSK handles a high volume of cancer patients at every stage of disease.

MSK's areas of expertise include:

• Medical oncology — Chemotherapy, targeted therapy, immunotherapy
• Surgical oncology — Complex cancer surgeries
• Radiation oncology — Advanced radiation techniques
• Hematologic oncology — Blood cancers (leukemia, lymphoma, myeloma)
• Pediatric oncology — Childhood cancers
• Pathology — Cancer diagnosis and molecular profiling
• Radiology — Cancer imaging

Despite its reputation for excellence, cancer misdiagnosis can and does occur at MSK. When it does, the consequences are particularly devastating because patients come to MSK specifically for world-class cancer care — and a diagnostic error at a premier cancer center can mean the difference between life and death.

[Link to: /medical-malpractice/misdiagnosis]

Types of Cancer Misdiagnosis at MSK

1. Delayed Cancer Diagnosis

A delayed diagnosis allows cancer to progress from an early, treatable stage to an advanced, less curable stage. At MSK, delayed diagnosis can occur when:

• Imaging is misread — A tumor is missed on a mammogram, CT scan, MRI, or PET scan
• Pathology is misread — A biopsy is misinterpreted, missing cancer cells
• Abnormal results are not followed up — A patient with an abnormal screening result is not called back for further evaluation
• Symptoms are dismissed — A patient's complaints are attributed to a non-cancer cause without appropriate workup

2. Wrong Cancer Diagnosis (False Positive)

A false positive — diagnosing cancer when it is not present — can lead to:

• Unnecessary surgery — Removing an organ or tissue that did not have cancer
• Unnecessary chemotherapy — With its devastating side effects
• Unnecessary radiation — With its long-term risks
• Psychological trauma — The emotional impact of a cancer diagnosis that was wrong

3. Wrong Cancer Type or Stage

Even when cancer is correctly identified, errors in typing (what kind of cancer) or staging (how advanced) can lead to the wrong treatment:

• Wrong histologic type — Different types of cancer require different treatments
• Wrong stage — Overstaging leads to unnecessary treatment; understaging leads to inadequate treatment
• Wrong molecular profile — Many cancers now require molecular testing to guide targeted therapy

4. Failure to Screen

The standard of care includes cancer screening for appropriate patients:

• Mammography — For women of appropriate age
• Colonoscopy — For patients of appropriate age or with risk factors
• PSA testing — For men of appropriate age
• Pap smears and HPV testing — For women of appropriate age

Failure to order appropriate screening — or failure to follow up on abnormal screening results — may be negligence.

[Link to: /medical-malpractice/cancer-misdiagnosis]

Pathology Errors: The Foundation of Cancer Diagnosis

Pathology is the gold standard for cancer diagnosis. A pathologist examines tissue under a microscope and determines whether cancer is present, what type it is, and how aggressive it appears. The pathologist's diagnosis drives all subsequent treatment decisions.

Types of Pathology Errors at MSK

1. False negative — Missing cancer that is present on the biopsy. This is the most dangerous error, as it gives false reassurance and allows cancer to grow untreated.

2. False positive — Diagnosing cancer when it is not present. This leads to unnecessary and harmful treatment.

3. Misclassification — Identifying the wrong type of cancer. Different cancer types require different treatments — a misclassification can lead to ineffective therapy.

4. Grading errors — Assessing the aggressiveness of the cancer incorrectly. Overgrading leads to overtreatment; undergrading leads to undertreatment.

5. Margin assessment errors — Incorrectly reporting whether the surgical margins are clear of cancer, affecting decisions about additional surgery or radiation.

The Standard of Care for Pathology

The standard of care for cancer pathology includes:

• Adequate sampling — The biopsy must include sufficient tissue for diagnosis
• Proper processing — The tissue must be properly fixed, embedded, sectioned, and stained
• Expert interpretation — The pathologist must have expertise in the specific cancer type
• Second opinion — For difficult or borderline cases, a second pathology opinion may be indicated
• Molecular testing — For cancers where molecular profiling guides treatment
• Timely reporting — The pathology report must be communicated promptly to the treating physician

[Link to: /medical-malpractice/pathology-errors]

Radiology Errors: Misread Imaging at MSK

MSK's radiology department uses state-of-the-art imaging — but errors still occur. Common radiology errors include:

• Missed tumors — On mammograms, CT scans, MRIs, PET scans, or ultrasounds
• Mischaracterization — Identifying a lesion but misclassifying it (e.g., calling a malignant tumor "benign-appearing")
• Failure to compare — Not comparing current imaging with prior studies to detect growth or change
• Communication failures — Critical findings not communicated to the treating physician or patient
• Inadequate imaging — Not obtaining the right modality or protocol for the clinical question

[Link to: /medical-malpractice/radiology-errors]

Failure to Follow Up on Abnormal Results

One of the most common and dangerous errors at any medical institution — including MSK — is the failure to follow up on abnormal results. This can occur when:

• A patient is not notified — Of an abnormal biopsy, imaging, or lab result
• A referral is not made — To an oncologist or surgeon when indicated
• A second opinion is not obtained — For a difficult or borderline case
• Results are lost — In the communication chain between radiology, pathology, and the treating physician
• The patient "falls through the cracks" — In a large, complex system

The standard of care requires a systematic approach to tracking and following up on abnormal results. Failure to have or follow such a system may be negligence by both the individual provider and the institution.

Delayed Referrals and Second Opinions

MSK is a referral center — patients are typically referred by outside physicians. However, delays can occur:

• Delay in referral — An outside physician delays referring a patient to MSK
• Delay within MSK — A patient referred to MSK experiences delays in scheduling imaging, biopsy, or consultation
• Delay in treatment — Once cancer is diagnosed, delays in starting treatment can allow the cancer to progress

For most cancers, treatment should begin within a few weeks of diagnosis. Unexplained delays may be negligence.

Wrong Cancer Diagnosis and Wrong Treatment

When the cancer is misdiagnosed — wrong type, wrong stage, or wrong molecular profile — the treatment may be ineffective or harmful:

• Wrong chemotherapy regimen — Based on wrong cancer type
• Unnecessary surgery — Based on wrong diagnosis
• Wrong radiation plan — Based on wrong staging
• Failure to use targeted therapy — Based on wrong molecular profile

Genetic Testing Errors

Modern cancer care increasingly relies on genetic and molecular testing to guide treatment. Errors include:

• Failure to test — Not ordering genetic testing when indicated
• Test errors — The lab makes an error in genetic testing
• Misinterpretation — The results are misinterpreted
• Failure to act on results — Genetic findings are not used to guide treatment

Who Can Be Held Liable?

In a cancer misdiagnosis case at MSK, potential defendants include:

• The pathologist — For misinterpreting biopsy results
• The radiologist — For misinterpreting imaging studies
• The treating oncologist — For failure to order appropriate tests, failure to follow up, or wrong treatment decisions
• The surgeon — For wrong surgical decisions
• Memorial Sloan Kettering — For staffing, credentialing, protocol, and system failures

Statute of Limitations and Legal Deadlines

Memorial Sloan Kettering is a private, nonprofit hospital:

• No notice of claim required
• CPLR 214-a — 2.5 years from the date of the malpractice
• Continuous treatment doctrine — May extend the deadline if you continued receiving treatment from the same provider for the same condition
• Discovery rule — In some cases, the statute may begin when the patient discovered (or should have discovered) the misdiagnosis, rather than when it occurred

Preserving Evidence at MSK

Critical evidence includes:

1. Pathology slides and reports — The actual slides can be re-reviewed by an independent pathologist
2. Imaging studies and radiology reports — All imaging can be re-read by an independent radiologist
3. Medical records — Documenting the evaluation, diagnosis, and treatment plan
4. Lab and genetic testing results
5. EMR audit trail — Electronic log of who accessed or modified records
6. Referral and consult notes

Your attorney should send a formal preservation letter to MSK immediately — particularly requesting that pathology slides be preserved for independent review.

Frequently Asked Questions

Can I sue Memorial Sloan Kettering for cancer misdiagnosis?

Yes. If a pathologist, radiologist, or oncologist at MSK misdiagnosed your cancer — and this caused you harm (delayed treatment, wrong treatment, or disease progression) — you may have a malpractice claim.

What if the pathologist at MSK misread my biopsy?

Pathology errors are among the most serious cancer misdiagnosis claims. If the pathologist missed cancer on your biopsy (false negative), diagnosed cancer when it was not present (false positive), or misclassified the cancer type, you may have a claim. An independent pathologist can re-review your slides.

How long do I have to sue MSK?

Under CPLR 214-a, the deadline is generally 2.5 years from the date of the malpractice. The continuous treatment doctrine may extend this if you continued receiving treatment at MSK for the same condition. The discovery rule may also apply in some cases.

Can I get my pathology slides re-reviewed?

Yes. Your attorney can request that MSK preserve and produce your pathology slides for independent review by a qualified pathologist. This is one of the most important steps in a cancer misdiagnosis case.

What if my cancer was missed on imaging at MSK?

If a radiologist at MSK missed a tumor on a mammogram, CT scan, MRI, or other imaging study, you may have a claim against the radiologist and the hospital. An independent radiologist can re-review the imaging.

What if MSK gave me the wrong cancer treatment?

If wrong treatment was given due to a misdiagnosis (wrong cancer type, wrong stage, or wrong molecular profile), you may have a claim against the treating oncologist, the pathologist, the radiologist, and the hospital.

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If you or a loved one has been affected by cancer misdiagnosis at Memorial Sloan Kettering, contact MDLaw Firm at 347-524-5777 for a free consultation.

This article is for informational purposes only and does not constitute legal advice. Prior results do not guarantee a similar outcome. No attorney-client relationship is created by reading this article or contacting MDLaw Firm.