Challenging anticoagulation therapy for multiple primary malignant tumors combined with thrombosis: A case report and review of literature

Table 1 The changes of indexes before and after operation were examined

Date	May 30, 2023, 13:00	May 30, 2023, 23:53	May 31, 2023	Operation	June 1, 2023	June 2, 2023	June 3, 2023	June 5, 2023	June 6, 2023	…	October 27, 2023
D-dimer (mg/L)	80.55	64.91	53.64	Operation	30.89	19.55	13.67	9.02	8.67	…	3.00
Fibrinogen quantification (g/L)	1.86	1.76	2.08	Operation	2.14	1.87	1.92	1.79	1.96	…	2.57

A notable reduction in the patient's postoperative D-dimer level was observed in comparison to the preoperative period.