209 results found
Article
Idiopathic non-cirrhotic portal hypertension
Idiopathic non-cirrhotic portal hypertension is the clinical diagnosis of exclusion featuring portal hypertension without hepatic cirrhosis, vascular obstruction, schistosomiasis, or a variety of other chronic liver diseases.
Terminology
Prior terms for this entity include non-cirrhotic portal...
Article
Bile duct dilatation
Bile duct dilatation refers to the dilatation of intrahepatic or extrahepatic bile ducts.
Clinical presentation
Variable, depending on the underlying cause, but usually:
right upper quadrant pain
jaundice
Radiographic features
Ultrasound
Harmonic imaging is useful when assessing the bilia...
Article
Peribiliary cyst
Peribiliary cysts occur in the setting of chronic liver disease where it is a rare, benign, and often asymptomatic disorder. They consist of cystic formations around the intrahepatic biliary ducts, primarily in a hilar distribution. Unlike choledochal cysts (for example in Caroli disease), perib...
Case
Infiltrative hepatocellular carcinoma (HCC)
Published
20 Jul 2018
77% complete
CT
Case
Hepatic haemangioma
Published
15 Mar 2022
98% complete
CT
Case
Gallbladder carcinoma
Published
17 Apr 2022
80% complete
MRI
Case
Gallbladder carcinoma - recurrence
Published
29 Apr 2022
80% complete
MRI
Article
Focal fatty sparing of the liver
Focal fatty sparing of the liver is the localised absence of increased intracellular hepatic fat, in a liver otherwise fatty in appearance i.e. diffuse hepatic steatosis. Recognition of this finding is important to prevent the erroneous belief that the region of sparing is itself a mass.
Epidem...
Article
Inferior vena cava
The inferior vena cava (IVC) (plural: inferior venae cavae) is one of the great vessels that drains venous blood from the lower limbs, pelvis and abdomen into the right atrium of the heart.
Gross anatomy
The inferior vena cava is formed by the confluence of the two common iliac veins at the L5...
Article
Agenesis of the left hepatic lobe
Agenesis of the left hepatic lobe is a rare variation in liver anatomy. It is clinically asymptomatic and discovered during imaging or surgery.
Radiographic features
absence of the left hepatic lobe (left of the falciform ligament, Couinaud segments 2 and 3)
absence of left hepatic artery, le...
Article
Subvesical bile ducts
Subvesical/subvesicular bile ducts are variants of the biliary tree, and knowledge of these is important because they account for a significant portion of post-cholecystectomy bile leaks.
Terminology
Cholecystohepatic ducts (usually segment 5 to the gallbladder) are commonly known as bile duc...
Article
Congenital diaphragmatic hernia
Congenital diaphragmatic herniation (CDH) accounts for a small proportion of all diaphragmatic herniae. However, it is one of the most common non-cardiac fetal intrathoracic anomalies.
Epidemiology
Congenital diaphragmatic hernias are seen in 1 of every 2000-4000 live births. 84% are left-side...
Case
Liver laceration - AAST grade V
Published
13 Jul 2017
92% complete
CT
Case
Chilaiditi sign
Published
14 Feb 2023
75% complete
X-ray
Article
Periportal halo sign (MRI)
The periportal halo sign on liver MRI is a specific sign of primary biliary cholangitis (formerly primary biliary cirrhosis) that is characterised by rounded low signal intensity around portal venous branches, 5-10 mm in size, on T1- and T2-weighted images. These lesions are usually numerous, in...
Case
Duplication of inferior vena cava
Published
28 Mar 2018
89% complete
CT
Annotated image
Article
Chilaiditi syndrome
Chilaiditi syndrome is the anterior interposition of the colon to the liver reaching the under-surface of the right hemidiaphragm with associated upper abdominal pain; it is one of the causes of pseudopneumoperitoneum.
Colonic gas in this position may be misinterpreted as true pneumoperitoneum ...
Article
Duodenal adenocarcinoma
Duodenal adenocarcinoma is the most common primary malignancy of the duodenum.
Epidemiology
Adenocarcinoma is the most common primary malignant neoplasm of the duodenum. It represents 0.3% of all gastrointestinal malignancies and accounts for 50-70% of small bowel adenocarcinomas occurring eit...
Case
Sarcoidosis - stage I
Published
09 Aug 2018
91% complete
Nuclear medicine
Article
Extrahepatic portal vein obstruction
Extrahepatic portal vein obstruction is the most common cause of non-cirrhotic portal hypertension in children and young adults in developing countries. It may or may not extend into the intrahepatic portal vein.
Clinical presentation
It usually occurs in children and young adults, presenting ...
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