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Diagnosing Diverticulitis: From CT Scans to Colonoscopies - What to Expect
Published: Aug 03, 2024
Diagnosing diverticulitis can be tricky, as its symptoms can mimic other conditions. Let's explore the journey from suspicion to diagnosis, and what tests you might encounter along the way.
The Power of Imaging
Computed Tomography (CT) scans are the gold standard for diagnosing diverticulitis. They can show inflamed diverticula, thickening of the colon wall, and complications like abscesses. The scan is quick, painless, and highly accurate. You'll lie on a table that slides into a donut-shaped machine, and the whole process takes about 10-30 minutes. Sometimes, you might need to drink a contrast solution beforehand to help highlight your digestive tract.
Blood Tests and Beyond
Your doctor will likely order blood tests to check for signs of infection and inflammation. These might include a complete blood count (CBC) to look for elevated white blood cells, and C-reactive protein (CRP) to measure inflammation levels. You might also need to provide a stool sample to rule out other causes of your symptoms, like infections. These tests help paint a fuller picture of what's going on in your body.
The Role of Colonoscopy
While not typically used to diagnose acute diverticulitis, colonoscopy plays a crucial role in follow-up care. It's usually performed 6-8 weeks after an acute episode to confirm healing and rule out other conditions like cancer. During a colonoscopy, a flexible tube with a camera is inserted through the rectum to examine the entire colon. You'll be sedated for comfort, and the procedure usually takes about 30-60 minutes.
Emerging Diagnostic Tools
Research is ongoing to find new ways to diagnose diverticulitis. Some studies are looking at fecal calprotectin, a marker of intestinal inflammation, as a potential diagnostic tool. Others are exploring the use of ultrasound, particularly in younger patients, to reduce radiation exposure from CT scans. While these methods aren't standard yet, they show promise for the future of diverticulitis diagnosis.
Frequently Asked Questions
Not always, but it's the most accurate test for diverticulitis.
CT results are often available within hours; blood tests may take 1-2 days.
Most are, but check with your provider for specific coverage details.
Sometimes, based on symptoms, but tests are usually needed for confirmation.
The benefits usually outweigh the small radiation risk for most patients.
Knowledge is Power
Understanding the diagnostic process can help ease anxiety and ensure you get the right treatment for diverticulitis.
References
- Sartelli M, et al. 2020 update of the WSES guidelines for the management of acute colonic diverticulitis in the emergency setting. World J Emerg Surg 2020; 15:32.
- Laméris W, et al. Graded compression ultrasonography and computed tomography in acute colonic diverticulitis: meta-analysis of test accuracy. Eur Radiol 2008; 18:2498.
- Tursi A, et al. The Role of Colonoscopy in the Diagnosis and Management of Diverticular Disease of the Colon. J Clin Gastroenterol 2019; 53:481.
- Daniels L, et al. Fecal calprotectin testing can identify ineffective antibiotic therapy in patients with IBD. World J Gastroenterol 2017; 23:7387.
This article has been reviewed for accuracy by one of the licensed medical doctors working for Doctronic. Always discuss health information with your healthcare provider.
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