In the recent past Milloy and I looked into the irresponsible overdiagnosis of cancers of the skin.
There are skin cancers that are not cancer in the usual sense of the word, squamous cell, and basal cell skin cancers are local growers but don’t metastasize. There is a form of melenoma that is not really cancerous even though there are severely malignant melanomas.
Prostate Cancer has some relatively benign forms.
So papillary cancer of the thyroid is another thing to consider.
Well here’s another one, a thyroid cancer that’s not really malignant in the usual sense.