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 ......
Invited Commentary |

Significance of Isolated Calf Vein Thrombosis—Further Evidence Online Only

Xuan-Binh D. Pham, MD1; Christian de Virgilio, MD1
[+] Author Affiliations
1Department of Surgery, Harbor−University of California, Los Angeles, Medical Center, Torrance
JAMA Surg. 2016;151(9):e161799. doi:10.1001/jamasurg.2016.1799.
Text Size: A A A
Published online


Clotting or bleeding? Which is worse? Surgeons grapple with this age-old conundrum every day. When we err on the side of withholding anticoagulants, we face the former, whereas aggressive blood thinning inevitably risks the latter. With the growing body of evidence that calf deep vein thrombosis (DVT) can lead to proximal clot propagation and pulmonary embolism (PE), the same risk-benefit analysis is now being invoked for calf DVT. Some argue that the risks of simply observing a calf DVT are low, but others have linked calf DVT to massive and fatal PE.1,2 Because the existing literature is heterogeneous, the appropriate management of calf DVT remains unclear. This uncertainty is highlighted by the American College of Chest Physicians, which gives its own calf DVT guidelines a grade of 2C (a weak recommendation based on poor evidence).3

Sign in

Purchase Options

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

First Page Preview

View Large
First page PDF preview





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.

See Also...
Articles Related By Topic
Related Collections
PubMed Articles