lump kidney

例句：

1. 1. He had a lump in his chest that doctors couldn't identify.
   他胸部有个肿块，医生无法确定是什么。
2. 2.The lump was removed surgically and the patient recovered quickly.
   这个肿块被手术切除了，病人很快就康复了。
3. 3. Lumps can be caused by various factors such as obesity, diabetes, and kidney disease.
   肿块可以由肥胖、糖尿病和肾脏疾病等多种因素引起。