tophus

This flux is composed of equal portions of iron slag, white tophus, and salt.

If gout is untreated and the disease becomes advanced, deposits of urate crystals may form into nodules called tophi beneath the skin.

Within six months of starting the treatments, the tophi on White's hands and legs had melted away, and she was able to resume a normal life.

In clinical trials the drug worked for about 40 percent of patients, in some cases bringing marked improvement in dissolving unsightly and disabling lumps, called tophi.

It is dissolved into ochre, and regenerated into tophus.