Focused Abdominal Computed Tomography in Clinically Suspected Adolescent Acute Appendicitis

Muhammad Imran Aslam, Muhammad Osman Karim, Syed Hussain Abbas, Ashifa Khan

Abstract


Background: Acute appendicitis (AA) is one of the most common causes of acute non-traumatic abdominal pain. The use of computed tomography (CT) in facilitating the diagnosis of AA in patients above the age of 50 where right iliac fossa (RIF) pain may represent a wide spectrum of differentials is well established. However, few studies have explored the value of low radiation, unenhanced focused abdominal computed tomography (FACT) in adolescent patients where AA represents the main differential for RIF pain. In this study, we aimed to examine the diagnostic accuracy of FACT scan in diagnosing AA in adolescent patients at a tertiary teaching children’s hospital.

Methods: The study was based on cross-sectional design and occurred over a 6-month period between November 2008 and May 2009. A prospective cohort of 95 patients between the ages of 10 - 21 years with clinically suspected AA satisfied the inclusion criteria. Patients with recent abdominal surgery or those who were pregnant were excluded from the study. The necessary institutional ethical approval was granted prior to study commencement.

Results: There was slight male preponderance of 51 patients (54%) and 44 females (46%). The mean age of AA was 12.75 ± 2.7 years (range 10 - 21). Statistical analysis showed FACT scan was 97.32% sensitive, 88.42% specific, with a positive predictive value of 98.8% and a negative predictive value of 80.0% in diagnosis of AA. The overall diagnostic accuracy of FACT scan in our study was 96.8%.

Conclusions: Unenhanced FACT scan is rapid, cost-effective and safe in diagnosis of adolescent AA.




J Curr Surg. 2018;8(1-2):7-12
doi: https://doi.org/10.14740/jcs339w


Keywords


CT scan; Appendicitis

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