[Computed tomographic colonography: applications, advantages and disadvantages]

Area of Science:

• Radiology
• Gastroenterology
• Oncology

Background:

• Complete preoperative colon evaluation is crucial for colorectal cancer management due to frequent associations with adenomas and synchronous carcinomas.
• Computed tomographic colonography (CTC) offers a potential solution for incomplete colonoscopies.

Purpose of the Study:

• To evaluate the indications and results of computed tomographic colonography in patients with suspected stenosing colorectal cancer and incomplete conventional colonoscopy.

Main Methods:

• A prospective descriptive study involving 50 patients who underwent CTC between May 2003 and August 2004.
• The study focused on patients with suspected stenosing colorectal cancer and incomplete conventional colonoscopy.

Main Results:

• CTC identified colonic neoplasms and peritoneal metastases in 50% of cases.
• The overall complication rate was 27.4%, primarily technical (23.4%), with no procedure-related mortality.
• False positives for pelvic masses and colonic polyps occurred in 3.125% and 11.7% of cases, respectively.

Conclusions:

• CTC is a safe, effective, and well-tolerated alternative for evaluating stenosing proximal colon neoplasms when colonoscopy is incomplete.
• CTC facilitates the detection of intra- and extracolonic findings, enhancing diagnostic and therapeutic patient management.