You are wrong.
Say no cancer become cancer can 100% sue and people have done it. It is not just about making wrong diagnosis.
Medical negligence vs Medical Malpractice.
https://www.alllaw.com/articles/nolo/medical-malpractice/negligence.html
Medical Negligence Does Not Equal Injury
It's important to reiterate that medical negligence does not always result in injury to the patient. When a driver runs a red light and no accident occurs, the driver is still negligent, even though no one got hurt. Similarly, a doctor or other health care professional might deviate from the appropriate medical standard of care in treating a patient, but if the patient is not harmed and their health is not impacted, that negligence won't lead to a medical malpractice case. (Learn more about
when it's medical malpractice—and when it isn't.)
How Negligence Becomes Medical Malpractice
In short, medical negligence becomes medical malpractice when the doctor's negligent treatment causes injury to the patient—makes the patient's condition worse, causes unreasonable and unexpected complications, or necessitates additional medical treatment, to name just a few examples of what's considered "injury" in a malpractice case.
In other words, the addition of two additional elements—legal causation and damages—are necessary before medical negligence will give rise to a viable medical malpractice lawsuit. If the doctor's medical negligence was not a foreseeable result of the patient's harm (causation), or if the doctor's medical negligence actually had no detrimental effect on the patient's condition (damages), a medical malpractice claim will fall short. Learn more about
why medical malpractice cases are a challenge to win.
As you can see, if the wrong diagnosis resulted in a delay in proper treatment of the cancer - that can constitute harm and injury to the patient, made it worse etc. Injury. yes.
If treated as per cancer, wrong not cancer, switch to antibiotics for infection or appropriate treatment then....patient gets well. No injury. No medical malpractice.