The value of ¹⁸F-FDG PET/CT imaging in diagnosis of postoperative recurrence of rectal carcinoma and metastasis of colon

Objective: To investigate the value ¹⁸F-FDG PET/CT imaging in the diagnosis of rectal cancer recurrence and metastasis after operation. Methods: 42 cases of colorectal cancer patients after surgery were involved, all patients were given general ¹⁸F-FDG PET/CT examination and strengthen CT examination. According to the PET/CT results, the postoperative anastomotic recurrence and metastasis were determined and patients were taken for reoperation or biopsy pathology diagnosis. Results: Among 42 colorectal cancer patients after resection, there were 2 cases recurrence without metastasis, 19 cases metastasis without recurrence, 11 cases with metastasis and recurrence, and 10 cases without recurrence and metastasis. The accuracy, specificity and positive predictive value of PET/CT examination were higher than that of strengthen CT(P < 0.05). Conclusion: The clinical application value of ¹⁸FFDG PET/CT imaging in the diagnosis of colorectal cancer recurrence and metastasis is higher than that of the traditional strengthening CT, and it can be wildly applied in clinical applications. (authors)