Can I sue the VA Hospital and/or the Dr. who failed to find and treat me for kidney and lung cancer?

It certainly sounds like the doctors were negligent in failing to do a cancer work-up, although you would expect the blood tests to trigger that kind of follow-up and it is curious that they did not. That aside, you should contact a local medical malpractice attorney (one in your state). Medical malpractice attorneys work on a contingent fee basis, which means they only get paid out of the proceeds of the lawsuit if you win. They provide free initial consultations. Sometimes an attorney will ask you to pay a "retainer" to cover the some of the expenses of a case, this is an issue that varies from office to office. I think the big problem in your case is going to be proximate cause. In layman's terms, to win your case you will have to prove that the four month delay in diagnosis would have changed the outcome. When you were diagnosed with cancer, it was already metastatic, and that suggests you had pretty advanced cancer already. Below are some articles that you may find helpful. Although they are written for my clients in New Jersey, most of the concepts carry over to other jurisdictions. Click here for an article that discusses the three main questions I ask when deciding whether to investigate a potential medical malpractice case. Click here for an article that explains what you can expect when filing a medical malpractice case. Please note that by attempting to answer your question, I am not acting as your attorney. I will do nothing further to protect or preserve your interests in the absence of any additional discussion with you about this matter. John Ratkowitz, Esq. Starr, Gern, Davison & Rubin, P.C. 105 Eisenhower Parkway.