Euroasian Journal of Hepato-Gastroenterology

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VOLUME 2 , ISSUE 2 ( July-December, 2012 ) > List of Articles

ORIGINAL ARTICLE

Comparison of Ultrasonography and Computed Tomography to Evaluate the Causes of Biliary Obstruction

Naffisa Adedin, Abdullah Shahriar, Jafreen Sultana, Akhtar Uddin Ahmed, AS Mohiuddin, Nayeema Rahman

Citation Information : Adedin N, Shahriar A, Sultana J, Uddin Ahmed A, Mohiuddin A, Rahman N. Comparison of Ultrasonography and Computed Tomography to Evaluate the Causes of Biliary Obstruction. Euroasian J Hepatogastroenterol 2012; 2 (2):98-103.

DOI: 10.5005/jp-journals-10018-1043

License: CC BY-NC 4.0

Published Online: 01-07-2012


Abstract

Objective: To observe the role of computed tomographic (CT) scan and ultrasonography (USG) examination to evaluate the causes of biliary obstruction. Materials and methods: This cross-sectional study was conducted in a total of 57 patients clinically suspected of obstructive jaundice. Results: The highest incidence of biliary obstruction was found in the age group between 40 and 49 years and the mean (±SE) age of the patients was 48.4 ± 1.6 years. Serum bilirubin and serum alkaline phosphatase were high in all patients. For evaluation of pancreatic mass, USG found true positive in 13 with no false positive, false negative 2 and true negative 42 cases. Similarly, CT scan found true positive in 15 and no false positive, no false negative and true negative in 42 cases. Sensitivity and specificity of USG in detecting pancreatic mass were 80 and 97.6%. CT scan showed 93.3% sensitivity and 97.6% specificity. In case of gallbladder (GB) mass USG found true positive in 20 and 1 false positive. There was no false negative and true negative in 36 cases. CT scan also revealed better sensitivity. USG could not detect any case of periampulla. Conclusion: Accuracy of USG and CT is high in detecting biliary tree dilatation, with CT scan slightly more accurate than USG. The difference in cost between the two is likely to decline with time and make CT even more attractive and handy for imaging the hepatobiliary system.


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  1. Baron RL, Stanley RJ, Lee JKT, et al. A prospective comparison of the evaluation of biliary obstruction using computed tomography and ultrasonography. Radiology 1982;145;91-98
  2. Computed tomography in obstructive jaundice. Radiology 1981;139:627-34
  3. Diseases of the liver and biliary system. (10th ed), Blackwell Science, London 2002:409-12
  4. Sonographic parallel channel sign: A reappraisal. Radiology 1987;164:343-46
  5. Accuracy of common hepatic duct size in the evaluation of extrahepatic biliary obstruction. Radiology 1980;135:141-44
  6. Abdominal and general ultrasound, Churchill Livingstone (2nd ed), London 2001;299-355
  7. Computed tomography and magnetic resonance imaging of the whole body (4th ed), Mosby, USA 1998:1341-481
  8. Computed body tomography and MRI correlation (3rd ed), Lippincott, New York 1998;779-844
  9. Comparative assessment of imaging modalities in biliary obstruction. Ind J Radiol Imag 2006;1(4)577-82
  10. US, MRCP, CCT and ERCP: A comparative study in 131 patients with suspected biliary obstruction. Med Sci Monit 2005;2:MT8-18
  11. Ultrasonography in obstructive jaundice. Radiology 1977;123:429-33
  12. Diseases of the biliary tract. In: Morris PJ, Wood WC (Eds). Oxford Textbook of Surgery, (2nd ed), Oxford University Press 2000;1685
  13. Comparison of ultrasound and ERCP in the detection of common cause of obstructive biliary disease. Rofo 1992; 156(3):252-57
  14. A comparison of computed tomography and sonography in choledocholithiasis. AJR 1984;142(4)729- 73
  15. The Insensitivity of sonography in the detection of choledocholithiasis’. AJR Philadelphia, USA 1984;172-73
  16. Ultrasound imaging of pancreas and biliary tract. Lancet 1990;335:390-93
  17. Usefulness of diagnostic tests for biliary obstruction. Am J Surg 1982;144(1):102-08
  18. The Biliary tree and gallbladder. In: Rumack CM, Wilson SR, Charboneau JW (Eds). Diagnostic Ultrasound (3rd ed), Elsevier, Mosby 2005;142:725-28
  19. Ultrasonography and computed tomography of carcinoma of the gallbladder’. Radiology 1979;133:167-73
  20. Role of ultrasound and computed tomography in the evaluation of gallbladder malignancy. MD Thesis, BIRDEM, Dhaka, Bangladesh 2006
  21. The role of dual-phase helical CT in assessing resectability of carcinoma of the gallbladder. Eur Radio 2002;12(8):1993-99
  22. Helical CT of the local spread of carcinoma of the gallbladder. Amer J Roengen 2002;179:423-28
  23. Ultrasound in the evaluation and diagnosis of jaundice. British J Radiol 1979;52:276-80
  24. Ultrasound in obstructive jaundice: Prospective evaluation of site and cause. Radiology 1983;147:511-15
  25. Bile duct obstruction: Radiologic evaluation of level, cause and tumor resectability. Radiology 1986;160:43-47
  26. Obstructive Jaundice—a diagnostic appraisal. J Assoc Physicians India 1993;41(4):200-02.
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