Diagnostic value of 18F-FDG PET/CT and tumor markers (CEA, CA19-9, CA24-2) in recurrence and metastasis of postoperative colorectal moderately differentiated adenocarcinoma.
- Author:
Xu Chu ZHANG
1
;
Jian Hua ZHANG
1
;
Rong Fu WANG
1
;
Yan FAN
1
;
Zhan Li FU
1
;
Ping YAN
1
;
Guang Yu ZHAO
1
;
Yan Xia BAI
1
Author Information
1. Department of Nuclear Medicine, Peking University First Hospital, Beijing 100034, China.
- Publication Type:Journal Article
- MeSH:
Adenocarcinoma/diagnosis*;
Biomarkers, Tumor;
CA-19-9 Antigen;
Carcinoembryonic Antigen;
Colorectal Neoplasms/diagnosis*;
Fluorodeoxyglucose F18;
Humans;
Neoplasm Recurrence, Local;
Positron Emission Tomography Computed Tomography;
Positron-Emission Tomography;
Recurrence
- From:
Journal of Peking University(Health Sciences)
2019;51(6):1071-1077
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVE:To evaluate the diagnostic value of 18F-FDG PET/CT and tumor markers (CEA,CA19-9,CA24-2) in detection for recurrence and metastasis of postoperative colorectal moderately differentiated adenocarcinoma.
METHODS:Fifty-five patients were enrolled in this study. All of the patients were tested with serum CEA within 2 weeks when they underwent 18F-FDG PET/CT scan, and some patients were tested with serum CA19-9 and CA24-2 simultaneously. According to the pathology and clinical results of their follow-up, the sensitivity, specificity, positive predictive value, negative predictive value and accuracy of 18F-FDG PET/CT and tumor markers were calculated based on different divided groups, respectively.
RESULTS:According to the pathology and the results of their clinical follow-up, the sensitivity of 18F-FDG PET/CT, CEA, CA19-9, CA24-2 and the combination of those three tumor markers were 95.74%, 68.09%, 28.57%, 40.00% and 74.47%, respectively. The specificity of 18F-FDG PET/CT, CEA, CA19-9, CA24-2 and the combination of those three tumor markers were 75.00%, 50.00%, 66.67%, 71.43% and 50.00%, respectively. The positive predictive valueof 18F-FDG PET/CT, CEA, CA19-9, CA24-2 and the combination of those three tumor markers were 95.74%, 88.89%, 85.71%, 88.89% and 89.74%, respectively. The negative predictive value of 18F-FDG PET/CT, CEA, CA19-9, CA24-2 and the combination of those three tumor markers were 75.00%, 26.67%, 11.42%, 17.24%, 25.00%, respectively. The accuracy of 18F-FDG PET/CT, CEA, CA19-9, CA24-2 and the combination of those three tumor markers were 92.73%, 65.47%, 32.65%, 44.68% and 70.91%, respectively. There were 2 cases of false positive and 2 cases of false negative in 18F-FDG PET/CT.
CONCLUSION:18F-FDG PET/CT has high value in detecting recurrence and metastasis of postoperative colorectal carcinoma. Tumor markers have the positive value to imply the recurrence and metastasis of postoperative colorectal carcinoma and are useful to indicate when to perform the 18F-FDG PET/CT. The combination of tumor markers could improve the diagnostic efficiency to some extent.
