The accuracy of multi-detector row computerized tomography in staging rectal cancer compared to endoscopic ultrasound

Abdulrahman M Aljebreen; Nahla A Azzam; Ahmad M Alzubaidi; Mohamed S Alsharqawi; Thamer A Altraiki; Othman R Alharbi; Majid A Almadi

doi:10.4103/1319-3767.111950

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ORIGINAL ARTICLE

Year : 2013 | Volume : 19 | Issue : 3 | Page : 108-112

The accuracy of multi-detector row computerized tomography in staging rectal cancer compared to endoscopic ultrasound

Abdulrahman M Aljebreen¹, Nahla A Azzam¹, Ahmad M Alzubaidi², Mohamed S Alsharqawi³, Thamer A Altraiki², Othman R Alharbi¹, Majid A Almadi⁴
¹ Division of Gastroenterology, King Khalid University Hospital, King Saud University, Riyadh, Saudi Arabia
² Division of Colorectal Surgery, King Khalid University Hospital, King Saud University, Riyadh, Saudi Arabia
³ Division of Radiology, King Khalid University Hospital, King Saud University, Riyadh, Saudi Arabia
⁴ Division of Gastroenterology, King Khalid University Hospital, King Saud University, Riyadh, Saudi Arabia; The McGill University Health Center, Montreal General Hospital, McGill University, Montreal, Canada

Correspondence Address:
Majid A Almadi
Division of Gastroenterology, King Khalid University Hospital, King Saud University, P.O. Box 2925 (59), Riyadh 11461, Saudi Arabia

Source of Support: This project is supported by College of Medicine Research Center, Deanship of Scientific Research, King Saud University, Conflict of Interest: None

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DOI: 10.4103/1319-3767.111950

Background/Aim: Our aim was to evaluate the diagnostic accuracy of multi-detector row computerized tomography (MDCT) in staging of rectal cancer by comparing it to rectal endoscopic ultrasound (EUS). Materials and Methods: We prospectively included all patients with rectal cancer referred to our gastroenterology unit for staging of rectal cancer from December 2007 until February 2011, 53 patients whose biopsy had proven rectal cancer underwent both MDCT scan of the pelvis and rectal EUS. Both imaging modalities were compared and the agreement between T- and N-staging of the disease was assessed. Results: We staged 62 patients with rectal cancer during the study period. Of these, 53 patients met the inclusion criteria and were evaluated (25 women and 28 men). The mean age was 57.79 ± 14.99 years (range 21-87). MDCT had poor accuracy compared with EUS in T-staging with a low degree of agreement (kappa = 0.26), while for N-staging MDCT had a better accuracy and a moderate degree of agreement with EUS (kappa = 0.45). Conclusions: MDCT has a poor accuracy for predicting tumor invasion compared to EUS for T-staging while it has moderate accuracy for N-staging.

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