未经治疗的痛风会使皮肤下沉积尿酸结石从而形成结节，成为结节瘤。
Advanced gout. Untreated gout may cause deposit of urate crystals to form under the skin in nodules called tophi (TOE-fi).
结节瘤通常不痛，但是在痛风发作的时候会肿胀变脆！
Tophi usually are not painful, but they can becomes swollen and tender during gout attacks.
结节瘤通常不痛，但是在痛风发作的时候会肿胀变脆！
Tophi usually are not painful, but they can becomes swollen and tender during gout attacks.
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