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The Clinical Value of the Combined Detection of Enhanced CT, MRI, CEA, and CA199 in the Diagnosis of Rectal Cancer

Overview
Journal J Oncol
Specialty Oncology
Date 2021 Aug 2
PMID 34335762
Citations 6
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Abstract

Background: To explore the clinical value of enhanced computed tomography (enhanced CT), magnetic resonance imaging (MRI), carcinoembryonic antigen (CEA), and cancer antigen 199 (CA199) in the diagnosis of rectal cancer (RC).

Methods: A total of 156 patients with RC confirmed by postoperative pathology admitted to the Affiliated Yantai Yuhuangding Hospital of Qingdao University from March 2018 to November 2020 were included in the malignant group, and 52 patients with chronic proctitis in the benign control group. All patients underwent preoperative enhanced CT, MRI scans, and serum CEA and CA199 tests. The accuracy, sensitivity, and specificity of single and combined enhanced CT, MRI, CEA, and CA199 tests for the clinical staging of RC were calculated.

Results: The postoperative pathological diagnosis showed that 35 cases of 156 RC patients were at 1 stage, 29 cases were at 2 stage, 24 cases were at 3 stage, 11 cases were at 4 stage, 23 cases were at 0 stage, 21 cases were at 1 stage, 8 cases were at 2 stage, 3 cases were at 0 stage, and 2 cases were at 1 stage. The positive rate of MRI in the diagnosis of RC was higher than that of enhanced CT. Serum CEA and CA199 levels in the malignant group were significantly increased compared with the benign group. The sensitivity, specificity, and accuracy of the combined detection were significantly higher than those of the single detection.

Conclusion: Compared with enhanced CT, MRI has a higher detection rate of and stage in patients with RC. Combined enhanced CT, MRI, CEA, and CA199 can provide more accurate diagnosis and preoperative staging of RC patients.

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