Imaging Acute Left Lower Quadrant Pain

posted by Savvas Nicolaou, M.D. | May 6, 2014

1. Review the variety of pathophysiology causing patients to present with acute left lower quadrant (LLQ) pain
2. Discuss the imaging modalities and imaging characteristics used in diagnosis of LLQ pain

Content organization

  • Review the anatomy and the different causes resulting in patients presenting with acute LLQ pain
  • Review the imaging modalities, such as radiographs, U/S, CT, and MRI, used for assessment of acute LLQ pain for different patient populations including children, pregnant women and the general adult patient
  • Demonstrate imaging examples of different causes of LLQ pain including ischemic bowel, sigmoid diverticulitis, ureterolithiasis, ectopic pregnancy, endometriosis, ovarian torsion, aortitis/vasculitis, aortic dissection/aneurysm, and psoas abscess
  • Discuss imaging-based management algorithms and the ACR appropriateness criteria
  • Discuss new imaging techniques applicable for imaging of patients with LLQ pain including new dose-reduction techniques such as iterative reconstruction, automated kVp modulation, and Dual Energy CT

Acute LLQ pain can be caused by a diverse variety of pathologies and it is important to recognize the key findings. The imaging approach is significantly different in a pediatric or pregnant women, thus, it is important to recognize which imaging modality is most appropriate.

Submission Type: Educational Presentation at RSNA 2013

Authors: T Liang, BS, Vancouver, BC; S Nicolaou, MD

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