porta hepatis


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Related to porta hepatis: greater omentum

porta hepatis

[′pȯrd·ə he′pad·əs]
(anatomy)
The transverse fissure of the liver through which the portal vein and hepatic artery enter the liver and the hepatic ducts leave.
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Dissection of the porta hepatis is undertaken to identify the branches of the hepatic artery, portal vein and biliary system of the segment(s) or lobe(s) to be resected.
The principles include a radical dissection within the porta hepatis to separate the proximal biliary remnant (and any lymphatic efferents) from the right and left portal vein and the hepatic arteries.
Combined biliary, hepatic artery and portal vein injury at the level of porta hepatis can occur following laparoscopic cholecystectomy.
The cyst should not be excised too high in the porta hepatis, as it is easy to cut off the cyst above the entrance of the right and left hepatic ducts into the cyst.
11) Abdominal ultrasound evaluations may show an enlarged liver and/or spleen as well as adenopathy in the porta hepatis or periportal edema.
The differential diagnosis of this condition includes gallbladder carcinoma, cholangiocarcinoma or lymphadenopathy in the porta hepatis.
Metastases were noted throughout the liver, within adjacent pericolonic lymph nodes, and in the prominent porta hepatis lymph node.
Air in portal venous radicals assumes a peripheral, subcapsular location within the liver parenchyma, reflecting the direction of portal venous flow, while air in the biliary tree will have a more central location in the porta hepatis as a consequence of hepatofugal bile flow.
Computed tomography showed a clot within the left femoral and saphenous veins and a large mass (arrow) displacing the inferior vena cava at the level of the porta hepatis (Figure 1).
The liver is the most frequent site of metastases, although isolated metastases to the porta hepatis are rarely reported in the literature.