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Assessment of spiral CT pneumocolon in preoperative colorectal carcinoma
Can-Hui Sun1, Zi-Ping Li, Quan-Fei Meng
1Department of Radiology, First Affiliated Hospital, Sun Yat-Sen University, Guangzhou 510080, Guangdong Province, China.
Aim:
To investigate the value of spiral CT pneumocolon in preoperative colorectal carcinoma.
Methods:
Spiral CT pneumocolon was performed prior to surgery in 64 patients with colorectal carcinoma. Spiral CT images were compared to specimens from the resected tumor.
Results:
Spiral CT depicted the tumor in all patients. Comparison of spiral CT and histologic results showed that the sensitivity and specificity were 95.2%, 40.9% in detection of local invasion, and 75.0%, 90.9% in detection of lymph node metastasis. Compared to the Dukes classification, the disease was correctly staged as A in 6 of 18 patients, as B in 18 of 23, as C in 10 of 15, and as D in 7 of 8. Overall, spiral CT correctly staged 64.1% of patients.
Conclusion:
Spiral CT pneumocolon may be useful in the preoperative assessment of patients with colorectal carcinoma as a means for assisting surgical planning.