fibrosis of spleen

例句：

1. 1. The patient's condition worsened after the surgery.
   手术后，患者的病情恶化了。
2. 2. The disease is characterized by a progressive loss of muscle mass and function.
   这种疾病的特点是肌肉质量的逐渐丧失和功能减退。
3. 3. Fibrotic tissue is dense and firm, while scar tissue is loose and pliable.
   纤维组织是致密而坚硬的，而瘢痕组织则是松软且有弹性的。