Malignant focal liver lesions
Feb 24, 2016
Malignant focal liver lesions
Metastasis • Liver is a most common site of metastatic disease
Metastasis
Clinical presentation-:• Jundice •Rt sided pain•Hepatomegally •Increase abdominal girth from ascites•Altered liver function tests
Metastasis Ultrasound appearance-:
• If very small can be missed • Solid focal lesion with ill defined margin • May be hypoechoic , hyperechoic , isoechoic or mixed pattern• Mass effect on adjacent structures• Calcifications may be seen• Other features as lobulated outline of the liver , hepatomegally , ascites and lymphadenopathy ( para-aortic , para-caval and portal region ).
MetastasisBull’s eye appearance
MetastasisNotes-:
When searching for liver metastasis , a full scan of the whole abdomen is necessary.
Lymphadenopathy may be difficult to demonstrate on ultrasound
Hepatocellular carcinoma Predisposing factors • Hepatitis• Cirrhosis • Drug related liver diseases
Hepatocellular carcinoma Clinical presentation :-Small tumors are asymptomatic but causes a raised alpha-fetoprotein
Hepatocellular carcinomaUltrasound appearance-:
• Small lesion in cirrhotic liver can be missed •HCC may be hypoechoic , hyperechoic or mixed echopattern •May be solitary or multiple
Hepatocellular carcinoma
Hepatocellular carcinoma
Diffuse liver diseases
Diffuse fatty infiltration of the liverCaused by accumulation of fat within the hepatic cells
Predisposing factors-: Alcoholism Obesity Diabetes
Diffuse fatty infiltration of the liverUltrasound appearance-:
The liver appears hyperechoic As the level of fat deposition increases , the level of echogenicity may reach that of the highly reflective portal tract walls.
The liver appears smooth and homogenous ( ground glass appearance )The contrast between the liver and RT kidney is increased
Diffuse fatty infiltration of the liver
• Intrahepatic vessel borders cannot be visualized• Nonvisualization of diaphragm in sever cases
Diffuse fatty infiltration of the liver
Diffuse fatty infiltration of the liver
Notes-:
• Fatty infilteration itself is not usually a significant findings .• Infilteration often occurs in conjunction with other diffuse processes as cirrhosis .• Its increased attenuation reduces the ability of ultrsound to exclude other disease or focal lesions .
Cirrhosis Cirrhosis is defined as hepatic fibrosis with the formation of nodules
Bands of fibrous tissue are laid down in the liver parenchyma between the hepatic lobules leading to distortion of and destruction the normal architecture of the liver separating it into nodules .
Cirrhosis
Cirrhosis is not a disease itself but it is a process associated with end stage chronic liver disease
It can result from chronic hepatitis , alcoholic disease Congenital form :- glycogen storage disease , haemochromatosis and wilson’s disease.
CirrhosisClinical picture-:
Pruritis FatigueJaundice SteatorrheaRaised alkaline phosphatase and serum bilirubinSigns of portal hypertension
CirrhosisUltrasound pictureat first hepatomegally then average size then shrunken
increased echogenicity, coarse, heterogenous
Nodular surfaceRegenerating nodules: hypoechoicUnequal distribution of cirrhosis in different segments
Cirrhosis
Portal hypertension* Collaterals: left gastric, paraesophageal, gastric , porta hepatis, splenorenal and gall bladder wall* Splenomegaly Ascites
CirrhosisComplications
Hepatocellular carcinoma (HCC) occurs in 10% of patients with cirrhosis;
Esophageal varices with bleeding
Cirrhosis
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