We're unable to sign you in at this time. Please try again in a few minutes.
We were able to sign you in, but your subscription(s) could not be found. Please try again in a few minutes.
There may be a problem with your account. Please contact the AMA Service Center to resolve this issue.
Contact the AMA Service Center:
Telephone: 1 (800) 262-2350 or 1 (312) 670-7827  *   Email: subscriptions@jamanetwork.com
Error Message ......
Letters |

Computed Tomographic Colonography for Detecting Advanced Neoplasia

Claude Matuchansky, MD
JAMA. 2009;302(14):1527-1529. doi:10.1001/jama.2009.1434.
Text Size: A A A
Published online


To the Editor: In their multicenter cross-sectional study of the diagnostic accuracy of computed tomographic (CT) colonography for the detection of advanced neoplasia in individuals at increased risk of colorectal carcinoma, Dr Regge and colleagues1 did not provide the frequency of adenomas that were nonpolypoid flat (ie, with a height of less than half of the lesion diameter) and depressed (ie, with a base that is lower than the normal mucosa) detected at colonoscopy. Such lesions are recognized with increasing frequency by skilled endoscopists in the United States,2,3 may compose up to about 17% of precancerous adenomas,4 and are often missed by CT colonography (with as many as 66% of flat lesions of 5-9 mm and 40% of flat lesions ≥10 mm missed4).


Sign in

Purchase Options

• Buy this article
• Subscribe to the journal
• Rent this article ?

First Page Preview

View Large
First page PDF preview




October 14, 2009
Paul Pisarik, MD, MPH
JAMA. 2009;302(14):1527-1529. doi:10.1001/jama.2009.1435.
October 14, 2009
Giovanni Galatola, MD; Cristiana Laudi, MD; Daniele Regge, MD
JAMA. 2009;302(14):1527-1529. doi:10.1001/jama.2009.1436.
October 14, 2009
Emily Finlayson, MD, MS
JAMA. 2009;302(14):1527-1529. doi:10.1001/jama.2009.1437.
Also Meets CME requirements for:
Browse CME for all U.S. States
Accreditation Information
The American Medical Association is accredited by the Accreditation Council for Continuing Medical Education to provide continuing medical education for physicians. The AMA designates this journal-based CME activity for a maximum of 1 AMA PRA Category 1 CreditTM per course. Physicians should claim only the credit commensurate with the extent of their participation in the activity. Physicians who complete the CME course and score at least 80% correct on the quiz are eligible for AMA PRA Category 1 CreditTM.
Note: You must get at least of the answers correct to pass this quiz.
Please click the checkbox indicating that you have read the full article in order to submit your answers.
Your answers have been saved for later.
You have not filled in all the answers to complete this quiz
The following questions were not answered:
Sorry, you have unsuccessfully completed this CME quiz with a score of
The following questions were not answered correctly:
Commitment to Change (optional):
Indicate what change(s) you will implement in your practice, if any, based on this CME course.
Your quiz results:
The filled radio buttons indicate your responses. The preferred responses are highlighted
For CME Course: A Proposed Model for Initial Assessment and Management of Acute Heart Failure Syndromes
Indicate what changes(s) you will implement in your practice, if any, based on this CME course.


Some tools below are only available to our subscribers or users with an online account.

0 Citations

Sign in

Purchase Options

• Buy this article
• Subscribe to the journal
• Rent this article ?

Related Content

Customize your page view by dragging & repositioning the boxes below.