Contrast-enhanced computed tomographic colonography in the follow-up of colorectal cancer patients: a feasibility study |
| |
Authors: | Laghi Andrea Iannaccone Riccardo Bria Emilio Carbone Iacopo Trasatti Luciana Piacentini Francesca Lauro Salvatore Vecchione Aldo Passariello Roberto |
| |
Institution: | (1) Department of Radiology, University of Rome "La Sapienza", Policlinico Umberto I, Rome, Italy,;(2) Department of Medical Oncology, Policlinico S. Andrea, Italy,;(3) Present address: Via Salaria, 334, 00199 Rome, Italy, |
| |
Abstract: | The aim of our study was to assess whether contrast-enhanced CT colonography is a feasible alternative to both conventional
colonoscopy and liver ultrasonography in the follow-up program of colorectal cancer patients. Thirty-five patients, surgically
treated for colorectal cancer, underwent a follow-up program that included physical examination, carcinoembryonic antigen
serum assay, conventional colonoscopy, liver ultrasonography, and chest X-ray. For these patients, we added a yearly contrast-enhanced
CT colonography. All CT examinations were performed with a high-resolution protocol using a multidetector spiral CT scanner
(Siemens, Erlangen, Germany) prior to and after the administration of 130 ml of i.v. contrast material. Images were directly
analyzed on a dedicated workstation by two radiologists to determine colonic evaluation, visualization of colonic anastomosis,
presence of polyps, and extra-colonic findings. Colonic evaluation was judged as optimal in 91.7% of all colonic segments.
All mechanical surgical anastomoses were visualized with CT colonography. There was no evidence of anastomotic recurrence.
Seven polyps were detected in five different patients with CT colonography, with two false-positive and no false-negative
examinations. Three liver metastases and two basal pulmonary nodules were also identified. Contrast-enhanced CT colonography
is a feasible alternative to both conventional colonoscopy and liver ultrasonography in the follow-up of patients operated
on for colorectal cancer.
Electronic Publication |
| |
Keywords: | CT colonography CT Colonic neoplasm Colorectal cancer follow-up |
本文献已被 PubMed SpringerLink 等数据库收录! |
|