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Because of the health risks of exposing children to radiation, ultrasound is the preferred first choice with CT scan being a legitimate follow-up if the ultrasound is inconclusive. [54] [55] [56] CT scan is more accurate than ultrasound for the diagnosis of appendicitis in adults and adolescents. CT scan has a sensitivity of 94%, specificity of 95%
A CT scan image showing a ruptured abdominal aortic aneurysm. CT Scan of 11 cm Wilms' tumor of right kidney in 13-month-old patient. Computed tomography of the abdomen and pelvis is an application of computed tomography (CT) and is a sensitive method for diagnosis of abdominal diseases. It is used frequently to determine stage of cancer and to ...
CT vs ultrasound [ edit ] CT scan has been shown to be more accurate, than ultrasound in detecting acute appendicitis, [ 9 ] but with children and pregnant women, ultrasound may be used to limit radiation exposure.
Ultrasound scans show "an oval, non-compressible hyperechoic mass with a subtle hypoechoic rim directly under the site of maximum tenderness". [4] Normally, epiploic appendages cannot be seen on CT scan. [4] After cross-sectional imaging and the increased use of abdominal CT for evaluating lower abdominal pain, EA is increasingly diagnosed.
Blood tests typically show a raised white cell count. [1] Other tests generally include urine pregnancy test, blood and exudate culture, and vaginal wet mount. [1] Ultrasound, CT-scan or MRI may be used to locate the abscess and assess its dimensions. [1] Treatment is with antibiotics and drainage of the abscess; typically guided by ultrasound ...
Historically, omental infarction was diagnosed only intraoperatively during surgery for presumed appendicitis or other causes of acute abdomen. But with the increase in the use of imaging, especially abdominal computed tomography (CT) scan in the work-up for acute abdomen, more cases of omental infarction are being diagnosed preoperatively.
It is also called appendicolith when it occurs in the appendix and is sometimes concurrent with appendicitis. [1] They can also obstruct diverticula. It can form secondary to fecal impaction. A fecaloma is a more severe form of fecal impaction, and a hardened fecaloma may be considered a giant fecalith. The term is from the Greek líthos=stone. [2]
Yet, CT scan is the best alternative for diagnosing intra-abdominal injury. [1] Computed tomography provides an overall better surgical strategy planning, and possibly fewer unnecessary laparotomies. Abdominal x-ray is therefore not recommended for adults with acute abdominal pain presenting in the emergency department. [2]