How New York Cancer Lawyers Investigate Delayed Lung Cancer Diagnosis

A lung cancer diagnosis is frightening enough. Learning that it had already spread, and that an earlier scan may have shown something nobody acted on, is a different kind of blow.

Families keep coming back to the same question: if it had been caught sooner, would things look different now?

That’s the question lawyers and their medical experts set out to answer. This article walks through how that investigation works.

Step 1: Gathering Every Image, Not Just the Cancer Workup

The investigation starts with every image the patient ever had, not only the scans ordered to look for cancer. Many of these cases trace back to a chest X-ray or CT done for something unrelated:

• A pre-surgery workup

• A scan after a fall or car accident

• A cardiac evaluation

• An emergency room visit for chest pain or shortness of breath

On one of those scans, a nodule appeared and was never flagged, never followed up, or never reported to the patient.

Lawyers request the actual image files, not just the written reports. A report reflects one radiologist’s read on one day. The images show what was really there.

Step 2: A Blinded Re-Read by a Thoracic Radiologist

An independent, board-certified radiologist, usually one who specializes in chest imaging, then reviews the earlier scans. In a well-run investigation, the reviewer isn’t told the eventual diagnosis, or is given the earlier scan mixed in with others.

Any radiologist can find a nodule when they already know where the cancer turned up. The real question is whether a careful radiologist, without hindsight, should have seen it and flagged it at the time.

If the nodule was visible, the next question is what accepted practice required. For incidental nodules, that usually means the Fleischner Society guidelines, which set follow-up intervals by size, type, and patient risk.

The review also asks whether the patient should have been screened at all. Under current guidance, adults 50 to 80 with a 20 pack-year smoking history who still smoke or quit within the past 15 years are eligible for annual low-dose CT.

If a patient fit that profile and screening was never discussed or documented, that becomes part of the analysis.

We explain how those intervals work in our guide to lung nodule size and follow-up guidelines. We cover the common ways radiologists miss or under-call nodules in our article on missed pulmonary nodules and lung cancer.

Step 3: Back-Calculating How the Tumor Grew

Once the earlier nodule is measured and compared with the tumor at diagnosis, experts estimate how fast it was growing.

The usual measure is volume doubling time, the number of days it takes a tumor to double in volume. With two measurements and the time between them, experts can work backward to estimate the tumor’s size, and its likely stage, on the date it should have been caught.

Growth rates vary enormously, which is why this has to be done case by case. A Weill Cornell-led study of cancers found between annual screening CTs reported a median volume doubling time of 98 days.

These were cancers that appeared within a year of a clear scan, so they skew toward the fastest-growing tumors. Many lung cancers, especially some adenocarcinomas, grow far more slowly. An expert who ignores the specific tumor’s behavior and applies a generic number is easy for the defense to attack.

Step 4: Translating Stage Into Harm

With the probable earlier stage established, an oncologist compares two scenarios: the treatment and outlook the patient would likely have had at the earlier date, and the ones they actually faced.

A cancer that could have been treated by removing part of a lung, with a real chance at long-term survival, may have progressed to the point where only chemotherapy, immunotherapy, or palliative care is possible.

The oncologist uses stage-specific survival data to put a figure on how much the delay reduced the patient’s odds. They also describe the difference in treatment burden, side effects, and time.

Step 5: Pulling the Full Record

Imaging is only part of the record. A thorough investigation collects the complete chart from every provider the patient saw. When a facility won’t cooperate, that sometimes means subpoenas, including to facilities that aren’t defendants.

It also looks at whether the hospital or practice had a working system for tracking and communicating critical results. When a radiologist flags a nodule and the recommendation never reaches the ordering doctor or the patient, the failure is often in that system rather than in any one person’s judgment.

Some information is hard to get. New York law protects a hospital’s internal quality-assurance and peer-review materials from discovery, which can limit what a family learns about how the facility reviewed its own error.

The investigation also documents the human and financial cost: medical bills, lost income or earning capacity, and the day-to-day impact on the patient and family.

If the patient has died, the claim continues through the estate, which we explain in our article on wrongful death after a missed lung cancer.

Can You Sue If Survival Was Never Likely?

Many families assume that if the odds were already below 50% at the earlier stage, there’s no case. That isn’t necessarily so in New York. New York courts have long allowed recovery when negligence diminished a patient’s chance of a better outcome, even when that chance was already less than even.

Kallenberg v. Beth Israel Hospital, a 1970s case, is the decision most often cited for that principle. More recent decisions continue in the same direction. In a 2017 breast cancer case we discuss in our article on lung cancer misdiagnosed as pneumonia, the Appellate Division held that a cure “is not the only positive treatment outcome.” More time, less suffering, or a real chance at surgery can all count.

The legal question is whether the delay was a substantial factor in making the outcome worse. New York’s highest court hasn’t fully defined how far this principle reaches, so the strength of the expert evidence is what usually decides these cases.

New York’s Filing Deadline

Under CPLR 214-a, as amended by Lavern’s Law, a claim for negligent failure to diagnose cancer generally must be filed within two years and six months. The clock runs from the later of two dates:

• When the patient knew or reasonably should have known of the error and the harm it caused

• The end of continuous treatment for the same condition

There is an outer limit of seven years from the negligent act or omission. Lavern’s Law is named for Lavern Wilkinson, a Brooklyn woman whose lung cancer was missed on a chest X-ray, and it exists for exactly these cases.

Claims against public hospitals, including NYC Health + Hospitals, require a notice of claim within 90 days. And before any malpractice suit is filed, New York requires a certificate of merit confirming that a qualified physician has reviewed the case. That’s one more reason the medical investigation has to come first.

Talk With a New York Cancer Lawyer

If you suspect a scan was misread, a follow-up was never ordered, or a result never reached you or your loved one, an early investigation is the way to find out what happened.

Our New York cancer lawyers work with thoracic radiologists, pulmonologists, and oncologists to review the original images and the full record.

Call 833-888-LATE, email info@porterlawteam.com, or request a free case evaluation.

Attorney advertising. This article provides general information and is not legal or medical advice. Prior results do not guarantee a similar outcome. Filing deadlines depend on the facts of each case.

Frequently Asked Questions

How do lawyers prove a delayed lung cancer diagnosis?

They collect every earlier chest X-ray and CT, have an independent thoracic radiologist re-read the original images without hindsight, and compare the findings with accepted follow-up guidelines. Experts then estimate how the tumor grew and what stage it likely was earlier. An oncologist explains how much the delay reduced the patient’s survival odds or treatment options.

What is a blinded radiology review in a malpractice case?

It’s an independent re-read of earlier scans by a radiologist who isn’t told the eventual diagnosis, or who reviews the key scan mixed in with others. It answers whether a careful radiologist, without hindsight, should have seen and flagged the nodule at the time. Blinded reviews carry more weight because they’re harder for the defense to dismiss.

Can I sue for a missed lung cancer if my survival odds were already low?

Possibly. New York courts have allowed recovery when negligence reduced a patient’s chance of a better outcome, even when that chance was already below 50%. The question is whether the delay was a substantial factor in worsening the outcome, such as lowering survival odds, ruling out surgery, or shortening life expectancy.

How do experts estimate what stage a lung cancer was at an earlier date?

They measure the nodule on the earlier scan and the tumor at diagnosis, then calculate its volume doubling time, the time it takes to double in size. Working backward from that growth rate, they estimate the tumor’s size and likely stage on the date it should have been caught. Growth rates vary widely, so the analysis has to fit each tumor.

How long do I have to file a delayed lung cancer diagnosis claim in New York?

Under CPLR 214-a, as amended by Lavern’s Law, a failure-to-diagnose cancer claim generally must be filed within two years and six months of when you discovered the error, or of your last continuous treatment, whichever is later. There is a seven-year outer limit. Claims involving public hospitals require a notice of claim within 90 days.