TY - JOUR AB - Positron emission tomography (PET) using 18F‑fluorodeoxyglucose has been widely used for analyzing cellular metabolism. The present study aimed to evaluate the association between the diagnostic value of PET/computed tomography (CT) in patients with post‑operative recurrent and metastatic colorectal cancer (CRC), and the different levels of carcinoembryonic antigen (CEA). A total of 105 suspected recurrent and metastatic CRC patients (67 males and 38 females; mean age, 48.5 years) were included in this retrospective study. All the patients underwent PET/CT examination. The differences in the PET/CT diagnostic values of CEA‑positive and ‑negative patients with recurrent CRC following surgery were retrospectively analyzed and compared. Among the 105 CRC patients, 87 exhibited recurrence and metastasis, as confirmed by histopathological diagnosis or clinical follow‑up data. By contrast, the PET/CT examination results revealed that 85 cases were true positives (a false positive foci was diagnosed in one of the patients), 18 were true negatives and 2 were false negatives. Correspondingly, the sensitivity and degree of accuracy were 97.7 and 97.1%, respectively. The detection rates of PET/CT for the recurrence and metastases were 85.3% in the CEA‑positive group and 75.7% in the CEA‑negative group. No significant differences were observed between the two groups. Overall, CEA levels do not help improve the detection rate of PET/CT in the recurrence and metastasis of CRC. PET/CT imaging has a high sensitivity and degree of accuracy in detecting recurrence and metastasis following CRC surgery. Therefore, this method is ideal for monitoring relapsed and metastatic foci of post‑operative colon cancer cases. AD - Department of Surgical Oncology (Interventional Therapy), Shandong Cancer Hospital and Institute, Shandong Academy of Medical Sciences, Jinan, Shandong 250117, P.R. China Department of Computed Tomography, Shandong Cancer Hospital and Institute, Shandong Academy of Medical Sciences, Jinan, Shandong 250117, P.R. China Department of Computed Tomography, Shandong Medical Imaging Research Institute, Jinan, Shandong 250000, P.R. China Six Ward of Shandong Mental Health Center, Jinan, Shandong 250014, P.R. China AU - Bu,Wenzhe AU - Wei,Ran AU - Li,Jinpeng AU - Wang,Lijun AU - Shi,Congcong AU - Song,Jinlong AU - Ma,Shuangshuang AU - Chen,Hua AU - Cong,Ning DA - 2014/12/01 DO - 10.3892/ol.2014.2523 EP - 2653 IS - 6 JO - Oncol Lett KW - colorectal neoplasm positron emission tomography carcinoembryonic antigen PY - 2014 SN - 1792-1074 1792-1082 SP - 2649 ST - Association between carcinoembryonic antigen levels and the applied value of 18F‑fluorodeoxyglucose positron emission tomography/computed tomography in post‑operative recurrent and metastatic colorectal cancer T2 - Oncology Letters TI - Association between carcinoembryonic antigen levels and the applied value of 18F‑fluorodeoxyglucose positron emission tomography/computed tomography in post‑operative recurrent and metastatic colorectal cancer UR - https://doi.org/10.3892/ol.2014.2523 VL - 8 ER -