The slightly elevated levels of aminotransferases may reflect an early toxic effect of methotrexate on the liver, although a nonspecific response to a systemic infection is also possible.

• 转氨酶水平轻微升高可能反映了甲氨蝶呤对肝脏的早期毒性作用,尽管也可能是全身感染引起的非特异性反应。