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Technical report: spiral CT pneumocolon for suspected colonic neoplasms
1Department of Imaging, UCL Hospitals Trust, Middlesex Hospital, London, UK.
Clinical Radiology
|January 1, 1996
Summary
Spiral computed tomography (CT) pneumocolon is a quick and comfortable imaging technique for colorectal cancer detection. It clearly visualizes tumors, local extension, and abdominal disease, outperforming barium enema.
Area of Science:
- Medical Imaging
- Gastroenterology
- Oncology
Background:
- Colorectal cancer diagnosis relies on imaging techniques.
- Barium enema has limitations in visualization and patient comfort.
Purpose of the Study:
- To evaluate the efficacy of abdominal spiral computed tomography (CT) pneumocolon for colorectal cancer detection.
- To compare CT pneumocolon with barium enema and surgical pathology.
Main Methods:
- Abdominal spiral CT pneumocolon involved colon cleansing, smooth muscle relaxant, rectal air insufflation, and intravenous contrast.
- Rapid dynamic scanning with 5-10 mm contiguous slices, reconstructed every 2.5 mm.
- CT findings were compared with barium enema and post-surgical pathology in four patients.
Main Results:
- Spiral CT pneumocolon clearly identified primary colorectal tumors as enhancing soft tissue masses in all cases.
- The technique detected local extension, lymphadenopathy, and assessed liver, peritoneum, and abdominal disease.
- CT provided clearer tumor morphology than barium enema and identified a missed polyp.
Conclusions:
- Spiral CT pneumocolon is a rapid, comfortable, and effective imaging method for colorectal cancer.
- It offers superior visualization of tumor morphology and abdominal disease compared to barium enema.
- Good correlation exists between CT findings and pathological results.