Correlation analysis between serum carbohydrate antigen 125 level and 18F-fluorodeoxyglucose PET/CT in detecting recurrence and metastasis of ovarian cancer
<0.001)。根据国际妇产科联盟(International Federation of Gynecology and Obstetrics,FIGO)卵巢癌分期,Ⅱ期患者16例、Ⅲ期33例、Ⅳ期48例,CA125分别为(155.73174.23)U/mL、(181.01211.70)U/mL、(204.80207.48)U/mL,最大标准摄取值(maximum standardized uptake value,SUV
For the clinical suspicion of recurrence and metastasis of ovarian cance
r
the diagnostic efficacies of serum carbohydrate antigen 125 (CA125) and
18
F-fluorodeoxyglucose (
18
F-FDG) PET/CT were compared and their relationship was analyzed.
Methods:
18F-FDG PET/CT and serum CA125 assay were performed in 157 postoperative patient with ovarian cancer
and the time interval was less than 7 d.
Results:
PET/CT imaging detected 97 positive and 60 negative. The levels of CA125 were (188.61202.70) U/mL and (32.4967.61) U/mL in the positive group and negative group
respectively. There was significant difference (
P
0.001). According to International Federation of Gynecology and Obstetrics (FIGO) staging of ovarian cancer
16 werestage Ⅱ
33 stage Ⅲ and 48 stage Ⅳ. The levels of CA125 were (155.73174.23) U/mL
(181.01211.70) U/mL and (204.80207.48) U/mL
respectively. The corresponding SUV
max
values were 8.454.18
8.793.55 and 9.324.33. There was no significant difference in CA125 level and SUVmax value among three groups. There was a weak correlation between CA125 level and SUVmax value (
r
=0.203
P
=0.046). The receiver operating characteristic (ROC) curve analysis revealed that the optimal cut-off of CA125 level to predict positive
18
F-FDG PET/CT result was 19.07 U/mL
the area under curve (AUC) was 0.871 (0.810-0.931)
the sensitivity was 89.7%
the specificity was 81.7%
the positive predictive value was 86.1%
and the negative predictive value was 85.7%.
Conclusion:
Serum CA125 and PET/CT imaging in detecting the recurrence and metastasis of ovarian cancer have better consistency. Especially in the ovarian cancer patients with CA12519.07 U/mL