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Delayed Diagnosis at Mount Sinai Hospital: NYC Malpractice Guide
Excerpt: Mount Sinai Hospital is one of New York's most renowned medical centers. But when diagnostic delays occur there, the consequences can be devastating. This guide explains your legal rights.
Table of Contents
- About Mount Sinai Hospital
- How Delayed Diagnosis Happens at Mount Sinai
- Delayed Cancer Diagnosis at Mount Sinai
- Delayed Heart Attack and Stroke Diagnosis
- Radiology and Pathology Errors
- Teaching Hospital Supervision and Liability
- Mid-Level Provider Diagnostic Errors
- Who Can Be Held Liable?
- Statute of Limitations and Lavern's Law
- Preserving Evidence at Mount Sinai
- Frequently Asked Questions
About Mount Sinai Hospital
Mount Sinai Hospital, part of the Mount Sinai Health System, is one of New York City's oldest and most prestigious medical centers. Located on the Upper East Side of Manhattan, it is the flagship of a system that includes multiple hospitals across the city.
As a major teaching hospital affiliated with the Icahn School of Medicine at Mount Sinai, it involves residents and fellows in patient care at every level. As a tertiary care center, it handles some of the most complex cases in the region.
With high patient volume and complex cases comes increased responsibility — and when diagnostic delays occur, the consequences can be devastating: delayed cancer diagnosis, missed heart attack, failure to diagnose stroke, or other catastrophic injuries.
[Link to: /medical-malpractice/misdiagnosis]
How Delayed Diagnosis Happens at Mount Sinai
1. Emergency Room Diagnostic Failures
Mount Sinai's emergency department is among the busiest in New York City. Common ER diagnostic failures include:
- Premature discharge — Sending a patient home before the diagnosis is established
- Failure to order tests — Not ordering ECG, troponin, CT, or other indicated tests
- Anchoring bias — Latching onto the first diagnosis and failing to consider alternatives
- Triage errors — Assigning a low triage priority to a patient with a serious condition
[Link to: /blog/failure-to-order-diagnostic-tests-malpractice-ny]
2. Radiology Errors
Mount Sinai's radiology department handles a high volume of imaging studies. Errors include:
- Misread mammograms — Missing breast cancer
- Misread CT scans — Missing tumors, hemorrhage, or other abnormalities
- Misread MRIs — Missing brain or spinal cord abnormalities
- Failure to compare — Not comparing current imaging with prior studies
- Communication failures — Critical findings not communicated to the treating physician
[Link to: /medical-malpractice/radiology-errors]
3. Pathology Errors
Mount Sinai's pathology department interprets biopsies, cytology, and surgical specimens. Errors include:
- False negative — Missing cancer on a biopsy (the most dangerous error)
- False positive — Diagnosing cancer when it is not present
- Misclassification — Grading or staging cancer incorrectly
- Communication failures — Critical pathology results not communicated promptly
[Link to: /medical-malpractice/pathology-errors]
Delayed Cancer Diagnosis at Mount Sinai
Mount Sinai's Tisch Cancer Center is a major oncology program. However, delayed cancer diagnosis can occur when:
- Imaging is misinterpreted — Radiologists miss tumors on mammograms, CT scans, or MRIs
- Pathology is misread — Biopsy results are misinterpreted, leading to delayed cancer diagnosis
- Abnormal results are not followed up — Patients with abnormal screening results are not called back
- Referrals are delayed — Primary care providers delay referring patients to specialists
The consequences of a delayed cancer diagnosis can be catastrophic — allowing cancer to progress from a curable early stage to an advanced, less curable stage.
[Link to: /blog/delayed-breast-cancer-diagnosis-laverns-law-rights]
Delayed Heart Attack and Stroke Diagnosis
Heart Attack
Despite being a major cardiac center, ER errors at Mount Sinai can lead to missed heart attack diagnoses — particularly in women, who may present with atypical symptoms. The standard of care requires an ECG within 10 minutes, serial troponins, and appropriate observation.
[Link to: /blog/delayed-diagnosis-heart-attack-er-negligence]
Stroke
As a Comprehensive Stroke Center, Mount Sinai is equipped to treat stroke — but the diagnosis must be made first. Failure to recognize stroke symptoms, failure to obtain a prompt CT scan, or failure to administer tPA within the treatment window may be negligence.
[Link to: /blog/delayed-stroke-diagnosis-medical-negligence]
Teaching Hospital Supervision and Liability
As a teaching hospital, Mount Sinai has a responsibility to ensure that residents and fellows are adequately supervised. Under 10 NYCRR § 405.4, attending physicians must provide appropriate supervision:
- Attending availability — The attending must be immediately available
- Participation in critical portions — The attending must participate in key diagnostic and treatment decisions
- Supervision of residents — The attending is responsible for the resident's actions
When a resident's diagnostic error causes harm — and the attending failed to provide adequate supervision — both the resident and the attending (as well as the hospital) may be liable.
[Link to: /medical-malpractice/hospital-negligence]
Mid-Level Provider Diagnostic Errors
As a large healthcare system, Mount Sinai employs physician assistants (PAs) and nurse practitioners (NPs) throughout its emergency rooms, clinics, and hospital wards. Diagnostic errors by mid-level providers — and failure to consult supervising physicians — are a growing source of malpractice claims.
[Link to: /blog/diagnostic-errors-physician-assistants-nurse-practitioners]
Who Can Be Held Liable?
In a delayed diagnosis case at Mount Sinai, potential defendants include:
- The attending physician — For diagnostic errors, failure to order tests, or failure to consult specialists
- The resident or fellow — If they failed to recognize the condition (though the attending is responsible for supervision)
- The radiologist — For misinterpreting imaging studies
- The pathologist — For misinterpreting biopsy results
- The PA or NP — For diagnostic errors and failure to escalate
- Mount Sinai Health System — For staffing, credentialing, protocol, and supervision failures
Statute of Limitations and Lavern's Law
Mount Sinai Hospital is a private, nonprofit hospital:
- No notice of claim required — Unlike NYC Health + Hospitals facilities
- CPLR 214-a — 2.5 years from the date of the malpractice
- Lavern's Law — May extend the deadline for cancer cases where the patient did not discover the malpractice until later
- Continuous treatment doctrine — May extend the deadline if you continued receiving treatment from the same provider
Preserving Evidence at Mount Sinai
Critical evidence includes:
- Medical records — Documenting the evaluation and diagnostic workup
- Imaging studies and radiology reports — Can be re-reviewed by independent radiologists
- Pathology slides and reports — Can be re-reviewed by independent pathologists
- Lab results — Blood tests and cultures
- EMR audit trail — Electronic log of who accessed or modified records (Mount Sinai uses Epic)
- Referral and consult notes — Whether specialists were consulted
Your attorney should send a formal preservation letter to Mount Sinai immediately.
Frequently Asked Questions
Can I sue Mount Sinai for delayed diagnosis?
Yes. If a physician, radiologist, pathologist, or mid-level provider at Mount Sinai delayed your diagnosis — and this caused additional harm — you may have a malpractice claim against both the individual provider and the hospital.
How long do I have to sue Mount Sinai?
Under CPLR 214-a, the deadline is generally 2.5 years from the date of the malpractice. Lavern's Law may extend this for cancer cases. The continuous treatment doctrine may also apply.
Is Mount Sinai a public or private hospital?
Mount Sinai Hospital is a private, nonprofit hospital. No notice of claim is required, and the standard statute of limitations applies.
What if a radiologist at Mount Sinai misread my imaging?
You may have a claim against the radiologist and against the hospital. An independent radiologist can re-review your imaging to determine whether the error was negligent.
Can my pathology slides be re-reviewed?
Yes. Your attorney can request that Mount Sinai preserve and produce your pathology slides for independent review by a qualified pathologist.
If you or a loved one has been affected by a delayed diagnosis at Mount Sinai Hospital, 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.