Articles
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1,384 results found
Article
Basilar artery fenestration
Basilar artery fenestration (or more simply, basilar fenestration) is the most common intracranial arterial fenestration and most common congenital anomaly of the basilar artery. This anatomic variant is characterized by duplication of a portion of the artery that are connected proximally and di...
Article
Pericardiophrenic artery
The pericardiophrenic artery, also known as the pericardiacophrenic artery, is a branch of the internal thoracic artery that runs to the diaphragm where it anastomoses with both the musculophrenic and superior phrenic arteries. It runs with the phrenic nerve and pericardiophrenic vein between th...
Article
Perforating veins of the lower limb
The perforating veins of the lower limb (PV or “perforators”) are so called because they perforate the deep fascia of muscles, to connect the superficial venous systems of the lower extremity with the deep veins where they drain. There are numerous veins in variable arrangement, connection, size...
Article
Subclavian artery branches (mnemonic)
Helpful mnemonics to remember the branches of the subclavian artery include:
Very Indignant Tired Individuals Sip Tasty Almond Coffee Served Double Daily
VIT C, D (as in vitamins C and D)
Mnemonics
Very Indignant Tired Individuals Sip Tasty Almond Coffee Served Double Daily
V: vertebral art...
Article
Tibioperoneal trunk
The tibioperoneal or TP trunk, occasionally referred to as the tibiofibular trunk, is the direct continuation of the popliteal artery in the posterior upper leg after the anterior tibial artery origin. It is a short trunk that bifurcates into two terminal branches.
Summary
origin: continuatio...
Article
Contrast level within inferior vena cava
A dependent contrast level within the inferior vena cava is a situation that can be observed in some cases with inferior vena caval contrast reflux. Its presence is usually associated with very poor cardiac output and can be accompanied by dependent layering of venous refluxed contrast within th...
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Inferior vena caval contrast reflux
Reflux of contrast into inferior vena cava can be common findings seen on CT. It is considered a specific but insensitive sign of right-sided heart disease / right heart dysfunction at low contrast injection rates although the usefulness decreases with high injection rates.
Conditions associate...
Article
Post traumatic arteriovenous vascular malformation
Post traumatic arterio-venous vascular malformations are an uncommon acquired form arteriovenous malformations which occur following a traumatic to that site.
Pathology
As with other vascular malformations, they comprise multiple communicating channels between arterial and venous channels at t...
Article
Median arcuate ligament
The median arcuate ligament is a fibrous arch connecting the left and right diaphragmatic crura at the aortic hiatus 1,2.
A low-lying median arcuate ligament can compress the celiac axis to cause celiac artery compression syndrome which is also known as median arcuate ligament syndrome (MALS) 2.
Article
Inferior hypophyseal artery
The inferior hypophyseal artery is a branch from the meningohypophyseal trunk, a branch of the C4 segment of the internal carotid artery. It is usually single on each side and divides into superior and inferior branches, anastomoses with its counterparts from the opposite, contributing to the in...
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Aortic hiatus
The aortic hiatus is one of the three major apertures through the diaphragm and lies at the level of T12. Strictly speaking, it is not a real aperture in the diaphragm, but an osseoaponeurotic opening between it and the vertebral column.
The hiatus is situated slightly to the left of the midli...
Article
Portal vein thrombosis
Portal vein thrombosis may be seen in a variety of clinical contexts, and when acute can be a life-threatening condition. It is a major cause of non-cirrhotic presinusoidal portal hypertension. Portal vein thrombus may be either bland and/or malignant (i.e. tumor thrombus), and it is a critical ...
Article
Glenn shunt
The Glenn shunt, also known as Glenn procedure, is a palliative surgical procedure for a variety of cyanotic congenital heart diseases.
Rationale
In this procedure, the systemic venous return is re-directed to the pulmonary circulation, bypassing the right heart 1-3.
It can be used in a varie...
Article
Partial anomalous pulmonary venous return
Partial anomalous pulmonary venous return (PAPVR), also known as partial anomalous pulmonary venous connection (PAPVC), is a rare congenital cardiovascular condition in which some of the pulmonary veins, but not all, drain into the systemic circulation rather than in the left atrium.
Epidemiolo...
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Type II endoleak
A type II endoleak refers to an endoleak due to flow through open collateral arteries after an endovascular abdominal aortic repair (EVAR).
Epidemiology
They are the most common type of endoleak and may occur in 10-44% of patients having repairs and can comprise around half of all endoleaks 1...
Article
Elephant trunk repair
An elephant trunk repair is a type of open repair procedure devised to address combined aneurysms, it is often a two staged procedure wherein the arch repair is facilitated by sternotomy and a second staged procedure is performed via left thoracotomy for the descending or thoracoabdominal aorta....
Article
Aortoiliac occlusive disease
Aortoiliac occlusive disease, also known as Leriche syndrome, refers to complete occlusion of the aorta distal to the renal arteries.
Terminology
Originally the triad of erectile dysfunction, pelvis and thigh claudication, with an absence of the femoral pulses was described as Leriche syndrome...
Article
Polymyositis (pulmonary manifestations)
Lung involvement in polymyositis can have a number of manifestations including those resembling interstitial lung disease.
For a general discussion of polymyositis, please refer to the parent article.
Radiographic features
The lungs may present with a mixture of different fibrotic patterns, e...
Article
Transposition of the great arteries
Transposition of the great arteries (TGA), also known as transposition of the great vessels (TGV), is the most common cyanotic congenital cardiac anomaly presenting during the newborn period, with cyanosis in the first 24 hours of life.
It occurs as a result of ventriculoarterial discordance, w...
Article
Intravenous drug user
Intravenous drug users (IVDU) are people who inject non-medical and controlled medical drugs (and may have substance use disorder) for non-medical purposes. Frequently injected drugs include heroin, cocaine, prescription opioids and methamphetamine 6.
Terminology
More neutral terms such as pe...
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