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CT colonography detects wide-range of extracolonic abnormalities in elderly patients
November 16, 2007CT colonography (CTC), when used in elderly patients, can detect a high number of new and significant abnormalities outside the colon (including cirrhosis and tumors) and is well tolerated, according to a recent study conducted by researchers at St. James's University Hospital in Leeds, United Kingdom (UK).
"We decided to target older patients (over age 70) with lower gastrointestinal tract symptoms, who were referred to radiology for work up, as this group generally tolerates barium enema examinations less well than those under age 70," said Damian Tolan, MD, lead author of the study. "Our study centered on the initial analysis of CT colonography examinations in this patient group. We only looked for significant pathology, excluding common benign incidental findings; for example gallstones or adrenal adenomas. It is important to note that CT colonography is not used for colorectal cancer screening in the UK and is reserved for symptomatic patients only," he said.
The study included 400 patients, who underwent CTC over a 14-month period. The study found 100 significant lesions that were previously unknown in 96 patients. The study also showed that 49 of the patients had at least one malignancy, including 23 extracolonic malignancies and 29 colorectal malignancies.
"Lower gastrointestinal symptoms in older patients over 70 are less specific for colorectal cancer than in younger patients. In our study, patients had a high yield for significant colonic pathology, including colon cancer and advanced adenomas," said Dr. Tolan. "While these would almost certainly have been detected by colonoscopy and barium enema, CT colonography detected a wide range of other abnormalities as well," he said."In all, 29% of patients had significant pathology outside the colon, and in 24% this was a newly diagnosed condition. These included gastric, lung and renal cancers (5.8%), complications of diverticular disease (2%) and a range of other conditions from abdominal aortic aneurysms to cirrhosis," he said.
"CT colonography also allowed simultaneous full staging of patients, determining whether tumors were localized or advanced with evidence of metastatic spread, thereby providing important prognostic information for referring physicians when deciding treatment options," he said.
American Roentgen Ray Society
"Lower gastrointestinal symptoms in older patients over 70 are less specific for colorectal cancer than in younger patients. In our study, patients had a high yield for significant colonic pathology, including colon cancer and advanced adenomas," said Dr. Tolan. "While these would almost certainly have been detected by colonoscopy and barium enema, CT colonography detected a wide range of other abnormalities as well," he said."In all, 29% of patients had significant pathology outside the colon, and in 24% this was a newly diagnosed condition. These included gastric, lung and renal cancers (5.8%), complications of diverticular disease (2%) and a range of other conditions from abdominal aortic aneurysms to cirrhosis," he said.
"CT colonography also allowed simultaneous full staging of patients, determining whether tumors were localized or advanced with evidence of metastatic spread, thereby providing important prognostic information for referring physicians when deciding treatment options," he said.
American Roentgen Ray Society
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Colonography Current Events and Colonography News RSSImproved DNA stool test could detect digestive cancers in multiple organs
Mayo Clinic researchers have demonstrated that a noninvasive screening test can detect not only colorectal cancer but also the common cancers above the colon -- including pancreas, stomach, biliary and esophageal cancers.
The clinical availability of CT colonography
Computed tomographic (CT) colonography allows the visualization of extracolonic organs, thereby permitting the detection of potentially significant pathologies beyond the colon.
CT colonography offers 1-stop screening for cancer and osteoporosis
New research reveals that computed tomography (CT) colonography, also known as virtual colonoscopy, has the potential to screen for two diseases at once-colorectal cancer and osteoporosis, both of which commonly affect adults over age 50.
Surgical Removal of Small Colon Polyps is Costly and Unnecessary
Polypectomy (the surgical removal of polyps by colonoscopy) of small polyps found during CT colonography is costly and unnecessary according to a study performed at the University of Wisconsin School of Medicine and Public Health in Madison, WI.
Is CT-colonoscopy a valuable tool to detect colorectal cancer?
CTC (virtual colonoscopy) is a thin slice CT scan of the abdomen after adequate bowel preparation and colon insufflation in which data are reconstructed providing axial, multiplanar, and endoluminal views, in order to visualize internal colonic wall.
Brown-Assisted Trial Finds New Colorectal Screening Procedure Is Accurate and Less Invasive
More patients stand to benefit from a comprehensive, less invasive method to accurately detect colorectal cancer and precancerous polyps, a multicenter study involving Brown University and institutions nationwide has found.
AGA Institute statement: Data support CT colonography as viable colorectal cancer screening option
Death from colorectal cancer is highly preventable with effective screening and early detection. Many screening options are available, each with advantages and disadvantages, but half of eligible patients still do not participate in colorectal cancer screening.
ASGE encourages patients to speak to their doctor about colorectal cancer screening options
Results of the National CT Colonography Trial, published in the September 18 issue of the New England Journal of Medicine, show improvements in the technology's ability to diagnose intermediate- to large-sized polyps in the colon, but this method of testing is not as effective in diagnosing small polyps
Health groups issue updated colorectal cancer screening guidelines
The American Cancer Society, the American College of Radiology, and the U.S. Multi-Society Task Force on Colorectal Cancer (a group that comprises representatives from the American College of Gastroenterology, American Gastroenterological Association, and American Society for Gastrointestinal Endoscopy) have released the first-ever joint consensus guidelines for colorectal cancer screening.
AGA supports new guidelines favoring tests that prevent colorectal cancer
New consensus colorectal cancer guidelines released today state for the first time that the primary goal of colorectal cancer screening is cancer prevention. Previous guidelines have given equal weight to tests for detecting cancer and preventing cancer. By removing polyps from the large bowel, colonoscopy is the only screening test that also prevents colorectal cancer.
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CT Colonography: Principles and Practice of Virtual Colonoscopy by Perry J. Pickhardt MD (Author), David H. Kim MD (Author) In CT Colonography, Perry Pickhardt and David Kim present techniques for quicker evaluation and diagnosis of colon cancer through the pioneering, specialty-changing imaging technique of virtual colonoscopy (VC). This combination of sophisticated X-rays and CT scans of the abdomen offers patients an alternative to colonoscopy that is cost effective and reduces the need for unnecessary polyp removal. Abundantly illustrated in full color, this pioneering book describes CT colonography from pathogenesis, staging and treatment through indications, technique, and interpretation for the most common pathologies. You'll have the full spectrum of VC technique and be able to see procedures performed through video clips on the included DVD. Covers principles, techniques, and interpretations... |
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Virtual Colonoscopy: A Practical Guide by Springer Virtual colonoscopy, or CT colonography, is a novel and rapidly evolving technique for the detection of tumoral lesions in the colon. It promises to be of great value as a screening tool for both colorectal cancer and its adenomatous precursor. With contributions from several leaders in the field, this book addresses all the important issues relating to virtual colonoscopy. There is a particular focus on practical aspects: how to start virtual colonoscopy in a department, the regular preparation, the importance of fecal tagging, how to reduce the preparation, how to obtain optimal colonic distension, and the correct scanning parameters. Imaging characteristics and pitfalls are considered in detail, with an extensive pictorial review of difficult lesions, and the importance of... |
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CTC promising as adjunct to colonoscopy.(GASTROENTEROLOGY)(computed tomographic colonography ): An article from: Internal Medicine News by Damian McNamara (Author) This digital document is an article from Internal Medicine News, published by International Medical News Group on April 15, 2009. The length of the article is 454 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available immediately after purchase. You can view it with any web browser. Citation Details Title: CTC promising as adjunct to colonoscopy.(GASTROENTEROLOGY)(computed tomographic colonography ) Author: Damian McNamara Publication: Internal Medicine News (Magazine/Journal) Date: April 15, 2009 Publisher: International Medical News Group Volume: 42 Issue: 8 Page: 18(1) Distributed by Gale, a part of Cengage... | |
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Accuracy, safety of CT colonography examined.(Gastroenterology): An article from: Internal Medicine News by Jeff Evans (Author) This digital document is an article from Internal Medicine News, published by Thomson Gale on February 1, 2005. The length of the article is 980 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available in your Amazon.com Digital Locker immediately after purchase. You can view it with any web browser. Citation Details Title: Accuracy, safety of CT colonography examined.(Gastroenterology) Author: Jeff Evans Publication: Internal Medicine News (Magazine/Journal) Date: February 1, 2005 Publisher: Thomson Gale Volume: 38 Issue: 3 Page: 80(2) Distributed by Thomson... | |
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Colonoscopy best for polypoid lesions: vs. barium enema, colonography.(Clinical Rounds): An article from: Family Practice News by Doug Brunk (Author) This digital document is an article from Family Practice News, published by International Medical News Group on June 15, 2004. The length of the article is 657 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available in your Amazon.com Digital Locker immediately after purchase. You can view it with any web browser. Citation Details Title: Colonoscopy best for polypoid lesions: vs. barium enema, colonography.(Clinical Rounds) Author: Doug Brunk Publication: Family Practice News (Magazine/Journal) Date: June 15, 2004 Publisher: International Medical News Group Volume: 34 Issue: 12 Page: 29(1) Distributed by Thomson... | |
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CT colonography refines screening for neoplasia.(Digestive Disorders): An article from: Family Practice News by Kate Johnson (Author) This digital document is an article from Family Practice News, published by Thomson Gale on November 1, 2007. The length of the article is 711 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available in your Amazon.com Digital Locker immediately after purchase. You can view it with any web browser. Citation Details Title: CT colonography refines screening for neoplasia.(Digestive Disorders) Author: Kate Johnson Publication: Family Practice News (Magazine/Journal) Date: November 1, 2007 Publisher: Thomson Gale Volume: 37 Issue: 21 Page: 37(1) Distributed by Thomson... | |
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Patient's page.(colonography, fecal DNA analysis, Bed sharing): An article from: Southern Medical Journal by Jennifer McKinney (Author), Bridget Garland (Author) This digital document is an article from Southern Medical Journal, published by Thomson Gale on September 1, 2006. The length of the article is 767 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available in your Amazon.com Digital Locker immediately after purchase. You can view it with any web browser. Citation Details Title: Patient's page.(colonography, fecal DNA analysis, Bed sharing) Author: Jennifer McKinney Publication: Southern Medical Journal (Magazine/Journal) Date: September 1, 2006 Publisher: Thomson Gale Volume: 99 Issue: 9 Page: 1019(1) Distributed by Thomson... | |
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Fundamentals of Virtual Colonoscopy by Springer Virtual colonoscopy is a rapidly developing technique that promises to be safer, more economical, and less intrusive than conventional diagnostic tests for colon cancer. Despite the attention that virtual colonoscopy is receiving among medical professionals, many lack an understanding of the basics of this cutting-edge procedure. Renowned radiologist Dr. Abraham Dachman and a distinguished group of international contributors have prepared a fundamentals book that fills this void. This practical handbook fully explains the essentials of this state-of-the-art technique to radiologists, gastroenterologists, radiology residents, and technologists. Key topics include how to perform and interpret a virtual colonoscopic examination, accuracy, and radiation dose. Illustrations reinforce major... |
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Medicare coverage of CT colonography looks unlikely.(PRACTICE TRENDS)(computed tomography): An article from: Internal Medicine News by Alicia Ault (Author) This digital document is an article from Internal Medicine News, published by International Medical News Group on March 15, 2009. The length of the article is 508 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available immediately after purchase. You can view it with any web browser. Citation Details Title: Medicare coverage of CT colonography looks unlikely.(PRACTICE TRENDS)(computed tomography) Author: Alicia Ault Publication: Internal Medicine News (Magazine/Journal) Date: March 15, 2009 Publisher: International Medical News Group Volume: 42 Issue: 6 Page: 36(1) Distributed by Gale, a part of Cengage... | |
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Medicare advisers back CT colonography, with caveats.(PRACTICE TRENDS)(computed tomography): An article from: Family Practice News by Alicia Ault (Author) This digital document is an article from Family Practice News, published by International Medical News Group on January 15, 2009. The length of the article is 589 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available immediately after purchase. You can view it with any web browser. Citation Details Title: Medicare advisers back CT colonography, with caveats.(PRACTICE TRENDS)(computed tomography) Author: Alicia Ault Publication: Family Practice News (Magazine/Journal) Date: January 15, 2009 Publisher: International Medical News Group Volume: 39 Issue: 2 Page: 30(1) Distributed by Gale, a part of Cengage... |
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