A cancer misdiagnosis lawyer helps patients harmed when a doctor misses, delays, or gets a cancer diagnosis wrong, and families who lost someone because the cancer wasn't caught in time. At Rosenthal, Kooshoian & Lennon, LLP, our cancer misdiagnosis attorneys prove that a competent provider would have caught it sooner, and that the delay changed everything. With cancer, time is the treatment, and a delay can cost a patient the chance they should have had.
A cancer caught early is often treatable, sometimes curable. The same cancer caught months or years late can be advanced, aggressive, or terminal. That's what makes a missed or delayed cancer diagnosis so devastating, and so serious as a malpractice case. Our Buffalo cancer misdiagnosis lawyers hold the providers who failed a patient accountable for the difference that lost time made. This is part of our broader medical malpractice and personal injury practice, so the full weight of the firm is behind your case.
Call us 24/7 at 716-854-1300 to speak with a personal injury lawyer near you, or contact us for a FREE consultation.
Cancer misdiagnosis is when a provider fails to correctly identify a cancer that a reasonably careful provider would have caught. It covers missing the cancer entirely, delaying the diagnosis, mistaking it for a harmless condition, or even diagnosing cancer that isn't there. When that error falls below the accepted standard of care and harms the patient, it's malpractice.
The harm in these cases usually comes from lost time. Cancer doesn't wait, and every month of delay can let it grow and spread. By the time the mistake is caught, a cancer that could have been treated at an early stage may have advanced to one that can't. Our cancer misdiagnosis attorneys focus on that lost time and what it cost the patient.
Usually through a breakdown somewhere in the diagnostic process. A radiologist misreads a scan, a pathologist misreads a biopsy, a doctor dismisses warning symptoms, a lab makes an error, or no one follows up on an abnormal result. Any of these failures can let a cancer go undetected when it should have been found.
The common examples our cancer misdiagnosis lawyers see include:
Whatever the breakdown, our cancer misdiagnosis attorneys trace exactly where the process failed and who was responsible.
Because cancer is staged by how far it has progressed, and treatment and survival depend heavily on the stage. A cancer caught at an early, localized stage often has a strong chance of successful treatment. Once it advances or spreads, the odds drop, the treatment becomes more aggressive, and in some cases a curable cancer becomes a fatal one. Delay can literally change the outcome.
This is the heart of a cancer misdiagnosis case. It isn't just that a mistake was made; it's that the mistake stole the patient's window to treat the disease when it was most beatable. Our cancer misdiagnosis lawyers work with oncologists to show what stage the cancer was at when it should have been caught, and how much the delay cost in treatment options and survival.
Loss of chance is a legal principle that lets a patient recover for the reduced chance of survival or cure that a delay caused, even if they might not have survived anyway. New York recognizes that when negligence takes away a meaningful chance the patient had, that lost chance is itself a real, compensable harm. You don't have to prove the patient would definitely have lived.
This principle matters enormously in cancer cases, because insurers love to argue the cancer would have been fatal regardless. The law doesn't accept that as a free pass. If timely diagnosis would have given the patient a genuine, better chance, and the delay took it away, that loss can be recovered. Our cancer misdiagnosis attorneys build the case around exactly how much chance the delay destroyed.
Several common cancers are missed or delayed more than others. Breast, lung, colorectal, prostate, skin, and cervical cancers, along with lymphoma and pancreatic cancer, are among the most frequently misdiagnosed. Some are missed because their early symptoms are vague, and others because a scan or biopsy was misread or a screening was never done.
Each of these cancers has a recognized path to early detection, screening, imaging, biopsy, or workup of specific symptoms, that a careful provider is expected to follow. When that path is ignored and the cancer advances, the failure can be malpractice regardless of the cancer type. Our cancer misdiagnosis lawyers handle cases across all of them, because the principle is the same: a chance to catch it was missed.
That can also be malpractice. A false cancer diagnosis, mistaking a benign condition for cancer, can lead to unnecessary chemotherapy, radiation, or surgery, all with serious, sometimes permanent side effects, along with profound emotional harm. Being wrongly told you have cancer, and treated for it, is its own kind of devastating error.
These cases are less common than missed diagnoses, but no less real. A patient who undergoes a mastectomy, loses an organ, or endures months of toxic treatment for a cancer they never had has suffered genuine, compensable harm. Our cancer misdiagnosis attorneys pursue these wrongful-diagnosis cases as vigorously as missed-cancer cases.
Often more than one provider. Responsibility can reach the primary care doctor who dismissed the symptoms, the radiologist who misread the scan, the pathologist who misread the biopsy, the lab that made an error, and the hospital or practice involved. Cancer diagnosis passes through many hands, and a failure at any point can be the cause.
Sorting out where the breakdown happened is central to these cases, because the responsible party isn't always the doctor the patient saw. A tumor may have been visible on a scan the treating physician never personally reviewed, pointing to the radiologist. Our cancer misdiagnosis lawyers examine the entire diagnostic chain and name every provider whose failure contributed to the delay.
With expert testimony on two key questions. First, that the provider fell below the standard of care by missing or delaying the diagnosis. Second, that the delay caused real harm, that an earlier diagnosis would have meant a better outcome, more treatment options, or a greater chance of survival. Both usually require respected medical experts to establish.
The causation piece is what makes these cases demanding. It's not enough that the diagnosis was late; you have to show the delay made a difference. That takes an oncologist who can explain how the cancer progressed and what a timely diagnosis would have changed. Our cancer misdiagnosis attorneys work with the right specialists to prove both the failure and the difference it made.
Longer than for many other malpractice cases, because New York gives extra time for missed cancer. While the usual medical malpractice deadline is about two and a half years, New York allows a claim for a missed cancer or tumor diagnosis to be filed within a set time after the patient discovered, or reasonably should have discovered, the error, up to an outer limit. This is a critical exception, but it still has firm boundaries.
The reason for this rule is obvious in cancer cases: a patient often has no way of knowing the diagnosis was missed until the cancer surfaces later, sometimes long after the ordinary deadline would have passed. Even with the extra time, though, the deadlines are strict, and a public hospital can require notice within about 90 days. Our cancer misdiagnosis lawyers calculate every applicable deadline precisely, so a valid claim isn't lost.
A cancer misdiagnosis claim can recover the cost of the additional and more aggressive treatment the delay required, lost income and earning power, compensation for pain, suffering, and reduced life expectancy, and the value of the survival chance the delay took away. If the misdiagnosis led to death, the family can pursue a wrongful death claim.
Because these cases so often involve advanced illness or a shortened life, the losses are profound and deeply personal. New York does not cap malpractice damages, so the recovery reflects the true harm rather than an artificial limit. Our cancer misdiagnosis attorneys document the full impact, medical, financial, and human, and pursue every category of compensation the law allows.
The family may have a wrongful death claim, along with a claim for what their loved one suffered. When a missed or delayed cancer diagnosis costs someone their life, the family can bring a claim through the estate against the providers whose failure let the cancer advance beyond treatment. These are among the most heartbreaking malpractice cases there are.
Our wrongful death lawyer page explains how these claims work in New York, who can bring them, and what a family can recover. Losing a loved one to a cancer that should have been caught in time is an especially painful loss, and our cancer misdiagnosis lawyers handle these cases with the compassion a grieving family deserves.
No. Even when the cancer has progressed, a claim can hold the responsible providers accountable and recover for the harm the delay caused. You don't have to wait for the outcome of your treatment to explore your rights, and in fact acting sooner helps preserve the evidence and protect the deadline. It's never too early to have the case reviewed.
Many patients assume that because they're focused on fighting the cancer, the legal question can wait, or that a lawsuit won't change their diagnosis. But a claim can secure the resources for the additional care the delay made necessary and provide for a family's future. Our cancer misdiagnosis attorneys handle the legal side so you can focus on your health and your family.
Get your complete medical records and have the case reviewed by a malpractice lawyer. Request all of your records, including the imaging, pathology, and lab reports, note the timeline of your symptoms and appointments, and avoid signing anything from a provider or insurer before getting advice. Because the deadlines have limits, don't put off having it evaluated.
The records tell the story in a cancer case, the scan that showed a mass, the biopsy that was misread, the abnormal result no one acted on. Getting them to a lawyer who can have them reviewed by the right specialist is the first real step. Our cancer misdiagnosis lawyers handle that review, tell you honestly whether you have a case, and protect every deadline while you decide.
Our cancer misdiagnosis lawyers build them around the lost time and what it cost. From the start, our attorneys obtain the complete records and imaging, have them reviewed by oncologists and the relevant specialists, identify every provider in the diagnostic chain who failed, and pin down every applicable deadline.
Our cancer misdiagnosis attorneys work with medical experts to establish both that the diagnosis was negligently missed or delayed and how much that delay changed the patient's prognosis, treatment, and survival chance. Our team documents the full impact with medical and economic experts, pursues every responsible provider, and prepares each case as if it's going to trial, because that's what a hospital's insurer respects. Most cases resolve through negotiation or mediation, but our cancer misdiagnosis lawyers build every one for trial, and our firm keeps these matters in house from start to finish.
Our cancer misdiagnosis lawyers represent injured patients and grieving families across Western New York, and our firm handles these cases the same way it handles every case, in house, start to finish, through settlement, trial, and appeal. Our attorneys have the medical relationships, the resources, and the trial experience these hard-fought cancer cases demand.
These cases reward a firm that understands both the medicine and the law of lost chance, will invest in the right oncology experts, and won't be intimidated by a hospital's defense team. That's what our cancer misdiagnosis attorneys bring, along with straight answers in plain language, so you always know where your case stands. You focus on your treatment and your family. Our team will handle the investigation and the fight.
If you or someone you love was harmed by a missed or delayed cancer diagnosis in Buffalo or Western New York, the attorneys at Rosenthal, Kooshoian & Lennon, LLP are ready to help. Contact us for a free consultation, and a Buffalo cancer misdiagnosis lawyer will review what happened, have your records evaluated, and lay out your options, with no fee unless we recover for you.
Don't wait, because even the extended cancer deadline has limits, and evidence is best preserved while it's fresh. The sooner our cancer misdiagnosis lawyers start, the more our team can do to secure the records, consult the right oncology experts, and protect the full recovery you and your family deserve. With cancer, the window to act on both your treatment and your claim is one you don't want to let close.
Call us 24/7 at 716-854-1300 to speak with a personal injury lawyer near you, or contact us for a FREE consultation.
Disclaimer: This page is for general information only and isn't legal advice. Reading it doesn't create an attorney client relationship. Medical malpractice law and its deadlines are complex and can change; the rules described reflect New York law as of 2026, and how they apply depends on your specific situation. Every case is different, and prior results don't guarantee a similar outcome. For advice about a specific case, please consult a licensed New York attorney.
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