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Hydrosonography in the evaluation of colorectal polyps
U P Ling1, J Y Chen, C J Hwang
1Department of Paediatrics, Chung Shan, Taichung, Taiwan, Republic of China.
Archives of Disease in Childhood
|July 1, 1995
Summary
Transabdominal ultrasound (hydrosonography) effectively identifies colonic polyps in children with rectal bleeding. This radiation-free method complements colonoscopy, offering a valuable alternative pre-procedural examination.
Area of Science:
- Pediatric Gastroenterology
- Diagnostic Imaging
Background:
- Rectal bleeding in children often necessitates endoscopic evaluation.
- Colonoscopy, while effective, carries risks and may not always be feasible.
Purpose of the Study:
- To evaluate the utility of pre-colonoscopy transabdominal ultrasound (hydrosonography) in diagnosing colonic polyps in children presenting with rectal bleeding.
- To compare the diagnostic yield of hydrosonography with colonoscopy in this pediatric population.
Main Methods:
- Seventeen children with rectal bleeding underwent pre-colonoscopy evaluation using prewarmed saline enemas and transabdominal ultrasound (hydrosonography).
- Findings from hydrosonography were compared with subsequent colonoscopy results.
Main Results:
- Hydrosonography identified polyps in 10 out of 12 patients diagnosed with polyps (83% sensitivity).
- Ultrasound detected 11 polyps, characterizing them as hyperechoic ovoid masses; colonoscopy identified finer mucosal details and smaller polyps.
- Colonoscopy was superior for detecting subtle mucosal abnormalities and smaller polyps.
Conclusions:
- Hydrosonography is a simple, non-invasive, and radiation-free imaging modality for evaluating the pediatric colon before colonoscopy.
- It serves as a complementary tool, aiding in the pre-procedural assessment of children with rectal bleeding and suspected polyps.