Tophi in or around the joints of the four limbs ;

③在四肢关节和关节周围的 痛风 石 形成；

Cases showed tophi deposition by the x-ray imaging 1 case with ulcerated tophi outflow chalk-like liquid included .

X线片影像学 提示有 痛风 石沉积 者7例，其中1例伴有痛风石破溃流出白垩状液体。

Crystal was collected from gout tophi . It had confirmed that are monosodium urate crystals by polarizing microscope .

方法 1.采集 痛风 病人 痛风 结节中的尿酸盐晶体，应用偏振光显微镜观察晶体形态，以证实其结晶为尿酸盐结晶。

Palpable tophi were 5 cases ( 23 % ) .

可 触及 痛风 石 者5例（23%）。