Hello from rad.usuhs.edu Located at Table is card and pk = 5913 Result =
Cisterna Chyli, MedPix™ : 5913 - Medical Image Database and Atlas
Welcome! It's Sunday, November 23, 2014 :: :: :: RSS COW feed ::
| | | | | | | Publish | | | :: compass
Look for - || ||
Open-Close Option Buttons

New Topic

Location and Category

More Like This ? Abdomen - Generalized
More Like This ? Retroperitoneum
More Like This ? Anatomy, Normal and Measurements
Click for Similar Topics: Click on the Location, Sublocation, or Category Links - (above)

TOPIC and DISCUSSION :: Slide Sorter - Image Thumbnails :: Print Topic ::

More Like This ? Cisterna Chyli
Topic 5913 - Created: 2004-08-29 23:56:48-04 - Modified: 2004-09-02 22:11:06-04
ACR Index: 9.1

The cisterna chyli is a dilated lymphatic sac in the retrocrural space usually to the immediate right of the abdominal aorta. It is located at the origin of the thoracic duct, usually described in anatomic studies as a saccular area of dilatation in the lymphatic channels that originates at the level of the L1–2 vertebral body and extends 5–7 cm in the caudocephalic direction. This region is also the location of the azygos and hemiazygos veins and the retrocrural lymph nodes. The cisterna chyli is joined by two lumbar and intestinal lymphatic trunks, after which it continues in the cephalic direction as the thoracic duct.

Despite this classic description, the cisterna chyli has a highly variable appearance. Complex anastomoses of lumbar lymphatics, which occur frequently, may result in a plexus rather than a single duct. Furthermore, multiple sacculations may be present in some of the convergent lymphatic channels. This wide variation in the origin of the thoracic duct has led some authors to prefer the descriptive phrase "abdominal confluence of the lymphatic trunks" to the term "cisterna chyli." The latter typically is reserved for cases in which a distinctly fusiform or saccular dilatation is present.

The main function of this ductal structure is the transport of ingested fat; approximately 100 mL of lymph per hour is transported through the channel. The caliber of the cisterna chyli may be altered by contraction waves, as has been demonstrated at fluoroscopy.

On MR Imaging, the cisterna chyli is considered present if a fluid collection with a diameter of 5 mm or more and signal intensity similar to that of bile or cerebrospinal fluid is visualized in the retrocrural space.

Shape is highly variable and includes the following morphologic patterns: a single straight thin tube, single straight thick tube, and single sausage-shaped tube; multiple parallel or converging tubes and tortuous tubes; a focal round or oval fluid collection; and a focal plexus.

Contributor Credits

Topic Submitted by: Steve Kao - Author Info
Affiliation: National Capital Consortium
Topic approved by: William R Carter, M.D. - Editor Info
Affiliation: National Naval Medical Center Bethesda

MedPix® is a Registered Trademark of USUHS
The MedPix™ Database Engine is Patented - USPTO No. 7,080,098
Portions of MedPix™ are Copyright © 1999 - 2014 by J.G. Smirniotopoulos, M.D. & H. Irvine, M.D.
The MedPix™ Classification Schema Copyright © 1999 - 2014 by J.G.Smirniotopoulos,M.D.
MedPix™ has displayed more than   1,166,048,421   pages since 3 September 2000.

master.php3 :: find me

- Case Tools | | - More Options
... Google Analytics Active ...