الفهرس 
• Anatomy of the large intestineOnly 14 pages are availabe for public view
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Abstract
Background
PET is considered to be the most sensitive and specific modality for the detection of recurrent colorectal cancer. This study is to assess the role of F18-FDG PET/CT in post-operative assessment in a patient with colorectal cancer with elevated CEA level to rule out local recurrence and/or metastasis and hence guiding the clinician to the proper management strategy.
Results
This study was performed on 45 patients who underwent surgical resection of the colon and/or rectal cancer; they were referred for PET/CT assessment at least 3 months after surgical resection. F18-FDG PET/CT sensitivity and specificity in detecting the recurrence and/or metastasis were 96.9 % and 83.3%, respectively. The positive predictive value was 94.2% while the negative predictive value was 90%.
Conclusion
For post-operative detection of loco-regional recurrence and metastasis in patients with colorectal cancer and elevated CEA level, 18F-FDG PET/CT can be considered as an efficient diagnostic imaging tool due to its high sensitivity and specificity which extensively affect further management