POSSIBILITIES OF VIRTUAL COLONOSCOPY AND ULTRASONOGRAPHY IN THE DIAGNOSIS OF COLON TUMORS

Abstract

The article presents information about the comparative capabilities of virtual colonoscopy (VC) and ultrasonography (USG) in the diagnosis of colon canxer in 75 patients. Fibrocolonoscopy revealed cancer in 34 patients, 93 polyps in 41 patients.
In 37 (39.8±5.1%) cases, the size of the polyps was less than 10 mm, and in 56 (60.2±5.1%) cases it exceeded 10 mm (P<0.001). In 11 (32.4±8.0%) patients with colon cancer, the wall thickness exceeded 10 mm and in 23 (67.6±8.0%) patients it was less than 10 mm (P<0.01). In the diagnosis of polyps >10 mm in size, VC sensitivity was 83.9%, specificity - 62.5%, accuracy - 81.3%, and in USG - 80.4%, 50.0% and 76.6%, respectively. In the diagnosis of colon cancer, the sensitivity of VC was 79.4%, specificity - 71.4%, accuracy - 78.0%, and in USG - 73.5%, 71.4% and 73.2%, respectively.
Based on the conducted studies, it can be concluded that the capabilities of ultrasound are slightly inferior to virtual colonoscopy, but the difference between them is not statistically significant. For this reason, ultrasound as a screening method can replace virtual colonoscopy.