The superior group of vessels in the falciform ligament: anatomical and radiological correlation.
OBJECTIVE
The purpose of this study was to clarify the anatomical detail of the superior group of vessels in the falciform ligament in terms of the relationship with the internal thoracic vessels, inferior phrenic vessels, and the intrahepatic portal vein.


METHODS
(1) Anatomical study: we dissected eight adult human cadavers (seven normal and one cirrhotic liver) to determine the relationship between the superior group of vessels in the falciform ligament, the internal thoracic vessels, and the inferior phrenic vessels. (2) Clinical study: we determined the origin and destination of the superior group of veins demonstrated in 8 of 4,006 patients with chronic liver disease who underwent the contrast enhanced CT scans.


RESULTS
(1) Anatomical study: the superior group of vessels anastomosed the right (n = 4), left (n = 2), and both (n = 2) internal thoracic vessels. They also anastomosed the left (n = 4), right (n = 1), and both (n = 2) inferior phrenic vessels. (2) Clinical study: the origin of the veins was identified as the left medial branch (n = 4), left lateral branch (n = 1), both the lateral and medial branches (n = 1), and the vein from the umbilical portion (n = 2) of the left portal vein. The drainage vein was identified as the left (n = 3), right (n = 2), and the both (n = 1) internal thoracic veins.


CONCLUSIONS
We demonstrated the anastomoses between the superior group of vessels of the falciform ligament, the internal thoracic vessels, the inferior phrenic vessels, and the intrahepatic portal vein. These pre-existing anastomoses would develop as porto-systemic shunt in patients with portal hypertension.
Ibukuro
Kenji
K
Department of Radiology, Mitsui Memorial Hospital, 1-Kanda Izumicho Chiyoda-ku, Tokyo 101-8643, Japan. kj-ibkr@qd6.so-net.ne.jp
Tanaka
Rei
R
Fukuda
Hozumi
H
Abe
Shoko
S
Tobe
Kimiko
K
D000368:Aged; D000369:Aged, 80 and over; D003287:Contrast Media; D005260:Female; D006503:Hepatic Veins / Q000033:anatomy & histology / Q000000981:diagnostic imaging*; D006801:Humans; D008022:Ligaments / Q000033:anatomy & histology* / Q000098:blood supply / Q000000981:diagnostic imaging; D008099:Liver / Q000098:blood supply* / Q000000981:diagnostic imaging; D008297:Male; D011169:Portal Vein / Q000033:anatomy & histology* / Q000000981:diagnostic imaging; D012189:Retrospective Studies; D013909:Thorax / Q000033:anatomy & histology / Q000098:blood supply*; D014057:Tomography, X-Ray Computed; D014471:Umbilical Veins / Q000033:anatomy & histology* / Q000000981:diagnostic imaging
D003287:Contrast Media