phosphatic calculus

例句：

1. 1.The doctor diagnosed him with a phosphostic calculus in his kidney.
   医生诊断他肾脏里有一颗磷酸盐结石。
2. 2.He had to undergo surgery to remove the phosphostic calculus from his stomach.
   他不得不接受手术，将胃里的磷酸盐结石取出。
3. 3.The patient's condition worsened after the phosphostic calculus was removed.
   患者移除磷酸盐结石后病情恶化。