Well, to be fair, I wasn't clear with exactly what happened. It sounds like they went in and got the cancer, but then thought they had found a second batch and sent it off for testing. Meanwhile, they requested that he undergo a second operation to remove said newfound cancer, which turned out to be tattoo ink. I wasn't saying, "Fuck yeah, sue the pants off the guy for malpractice!!!!12!!!!" I was asking whether this is a justifiable misdiagnosis, and wondering (since I can't imagine this is the first time it has happened to a patient somewhere) if the doctor should have known, assuming that it ISN'T the first time it's happened to a patient and that the doc did see the patient's tattoos, that the ink could be mistaken for cancer.
It seems to me like a cancer doctor should be up to date on the substances that can be mistaken for cancer and at least consider them during a diagnosis, so I was asking whether this was a known issue with tattoo ink. As I mentioned before, I hate frivolous lawsuits, and were I in the same situation, I'd probably be so damn stoked that the cancer was not really cancer that issues like this would take a backseat. But he's also likely facing large medical bills, bills which I'd be less inclined to pay due to the misdiagnosis, ESPECIALLY if this was something a doctor should have caught.
In the end, congratulations on your health livestrong.