gout

Chronic gout leads to deposion of urates into a chalky mass known as a "tophus".

慢性痛风导致尿酸盐似白垩的物质，即痛风石。

Pseudogout is sometimes confused with gout because the symptoms are similar; however, it is caused by calcium phosphate, not uric acid.

由于假痛风的症状与痛风相似，故有时会混淆，不过，假痛风是由磷酸钙引起，而非尿酸。