What does the caudate lobe of liver do?

The caudate lobe represents the only part of the liver that is in contact with the vena cava, except at the entrance of the main hepatic veins into the vena cava, and provides an anastomosis between the hepatic veins and vena cava.

What is quadrate lobe of liver?

The quadrate lobe is an area of the liver situated on the undersurface of the medial segment left lobe (Couinaud segment IVb), bounded in front by the anterior margin of the liver, behind by the porta hepatis, on the right by the fossa for the gall-bladder, and on the left by the fossa for the umbilical vein.

What causes an enlarged caudate lobe?

Causes of an enlarged caudate lobe (caudate lobe hypertrophy) include the following: Cirrhosis. Hepatic venous occlusion in which venous drainage from the caudate lobe to the IVC is maintained by emissary veins. Focal mass lesions within the caudate lobe.

How is caudate lobe measured CT?

Method for measuring

1. image: axial slice immediately below the bifurcation of the main portal vein.
2. line 1: a parasagittal line drawn through the right lateral border of the portal vein.
3. line 2: a parasagittal line drawn through the left lateral border of the caudate lobe.

What is Porta in human body?

The porta hepatis is a deep fissure in the inferior surface of the liver through which all the neurovascular structures (except hepatic veins) and hepatic ducts enter or leave the liver 1. It runs in the hepatoduodenal ligament and contains: right and left hepatic ducts.

How does blood flow to the liver?

The blood flows into the liver through the hepatic portal vein. It filters through the liver in a system of smaller and smaller veins. As blood passes over liver cells, these cells process nutrients in the blood.

What is the biggest lobe of the liver?

The liver consists of 4 distinct lobes — the left, right, caudate, and quadrate lobes. The left and right lobes are the largest lobes and are separated by the falciform ligament. The right lobe is about 5 to 6 times larger than the tapered left lobe.

What is the right hepatic lobe?

The right hepatic vein divides the right lobe of the liver into anterior and posterior segments. The middle he- patic vein divides the liver into the right and left lobes and runs in the same plane with the inferior vena cava and the gallbladder fossa.

What is chronic liver disease?

Cirrhosis is when scar tissue replaces healthy liver tissue. This stops the liver from working normally. Cirrhosis is a long-term (chronic) liver disease. The most common causes are hepatitis and other viruses, and alcohol abuse. Other medical problems can also cause it.

What is lobe hypertrophy?

Hypertrophy of the caudate lobe is seen in a number of conditions, including: cirrhosis: most common. Budd-Chiari syndrome. primary sclerosing cholangitis (end stage) congenital hepatic fibrosis.

Can you see cirrhosis on MRI?

Cirrhosis can be diagnosed by radiology testing such as computed tomography (CT), ultrasound or magnetic resonance imaging (MRI) or via a needle biopsy of the liver. A new imaging technique called elastography, which can be performed with ultrasound or MRI, can also diagnosis cirrhosis.

What is Riedel lobe?

Riedel lobe of the liver is a simple anatomical variation, a downward tongue-like projection of the anterior edge of the right lobe of the liver to the right of the gallbladder with its typical case to be rare.

Where is the caudate lobe located in the liver?

Caudate lobe. The caudate lobe ( posterior hepatic segment I, Spigelian lobe) is situated upon the postero-superior surface of the liver on the right lobe of the liver, opposite the tenth and eleventh thoracic vertebrae . The caudate lobe of the liver is bounded below, by the porta hepatis; on the right,…

What causes hypertrophy of the caudate lobe of the liver?

Caudate lobe. Budd–Chiari syndrome, caused by occlusion of hepatic venous outflow, can lead to hypertrophy of the caudate lobe due to its own caval anastomosis that allows for continued function of this lobe of the liver. The caudate lobe is named after the tail-shaped hepatic tissue ( cauda; Latin, “tail”) caudate process of the liver,…

Is the caudate lobe supplied by the portal vein?

The caudate lobe may be supplied by both right and left branches of the portal vein. This CT-image is of a patient with liver cirrhosis with extreme atrophy of the right lobe, normal volume of the left lobe and hypertrophy of the caudate lobe.

What is the caudate-right lobe ratio in cirrhosis?

The caudate-right lobe ratio may be useful in quantifying caudate hypertrophy. A ratio of greater than 0.65 indicates a high likelihood of cirrhosis. 1. Vilgrain Valérie, Bertrand Condat, Christophe Bureau et al. “Atrophy-Hypertrophy Complex in Patients with Cavernous Transformation of the Portal Vein: CT Evaluation1.”