First, I declare I am not a medical doctor, this is just my personal opinion only and I should not be held responsible, in any way, for any consequence.
Here you go:
Degenerative disc margin spurring is seen in the thoracic spine. ==>胸椎骨有"degenerative disc disease(椎间盘退化性疾病?)" 和 "刺骨".
1. Degenerative disc disease is not really a disease but a term used to describe the normal changes in your spinal discs as you age.
2. "刺骨"是沿着骨的边缘发展。骨刺本身并不痛苦,但他们可以对附近的神经和骨骼摩擦,引起疼痛。
If it causes back or neck pain, follow up with doctor. If not, I won't bother about it, everyone will have some wear and tear due to aging

2.验血 creatinine 49 ==> normal
Each laboratory has different normal range, usually
(40-110) is normal so your creatinine is fine
3.验血 MPV 11.9 ==> near upper normal range
should monitor this next time to see if it is increasing. Higher usually is associated with an increased risk of heart attacks and stroke. But yours is not very high, that is why the doctor is not doing anything now
请明白的给解释一下都是什么意思。下面两项验血是超出正常指标的。我在网上查查,好像一般都是MPV偏低。我这个怎么偏高呢。
4.FERRITIN 40 好像含铁也有点偏低吧。明白的人讲讲,这个值需要注意么?==>铁蛋白是血细胞的蛋白质,含有铁。铁蛋白测试可以帮助医生了解你的身体是存储多少铁。==>
NORMAL is around 10-250 µg/L, why you said low??

