Items tagged “vascular”
80 results found
Article
String sign (artery)
The angiographic string sign, also known as the carotid string sign or slim sign, refers to the thin string of intravascular contrast material distal to a stenotic focus in the internal carotid artery (ICA).
Pathology
A thin stripe of flow is caused by decreased pressure and flow distal to th...
Article
Aorta
The aorta, the great artery, is the largest artery of the human body and carries oxygenated blood ejected from the left ventricle to the systemic circulation. It is divided into:
thoracic aorta
ascending aorta
aortic arch
descending aorta
abdominal aorta
It has branches from each section a...
Article
Asymmetrically large jugular bulb
Asymmetrically large jugular bulbs are entirely normal and asymptomatic; its only significance is to distinguish it from pathology.
The size of the jugular bulbs is variable, with the right side being significantly larger than the left in two-thirds of people.
A normal but large bulb will have...
Article
Budd-Chiari syndrome
Budd-Chiari syndrome, also known as hepatic venous outflow obstruction (HVOO), refers to the clinical picture that occurs when there is partial or complete obstruction of the hepatic veins.
There is no clear consensus regarding the number of occluded veins, some authors claim that there should...
Article
Capillary hemangioma of the orbit
Capillary hemangiomas of the orbit, also known as strawberry hemangiomas, on account of its coloring, or orbital infantile hemangiomas, are the most common orbital tumors of infancy, and unlike orbital cavernous hemangiomas, they are neoplasms rather than vascular malformations.
Clinical presen...
Article
Caroticocavernous fistula
Caroticocavernous fistulas represent abnormal communication between the carotid circulation and the cavernous sinus. They can be classified as direct or indirect which are separate conditions with different etiologies.
Epidemiology
Direct caroticocavernous fistulas are often secondary to tra...
Article
Cerebrovascular malformations
Cerebrovascular malformations are vascular malformations related to the vessels that supply the brain and other cranial structures.
Classification
Over the years, cerebral vascular malformations have been classified in a variety of ways by many authors, often on the basis of the presence or ab...
Article
Developmental venous anomaly
Developmental venous anomaly (DVA), also known as cerebral venous angioma, is a congenital malformation of veins which drain normal brain. They were thought to be rare before cross-sectional imaging but are now recognized as being the most common cerebral vascular malformation, accounting for ~5...
Article
Dural sinus occlusive disease
Dural sinus occlusive disease (DSOD) is an infective form of dural sinus thrombosis (thrombophlebitis) commonly seen in the setting of acute otomastoiditis. It typically presents with:
severe headaches
high fevers
sixth nerve palsy - due to involvement of Dorello's canal
altered conscious st...
Article
Fibrinous pericarditis
Fibrinous pericarditis is an inflammatory process involving the pericardium, leading to a rough and granular appearance with numerous fibrous adhesions 4.
Clinical presentation
Pericardial friction rub may be heard.
Pathology
Etiology
viral
acute idiopathic
tuberculosis
pyogenic
acute r...
Article
Hereditary hemorrhagic telangiectasia
Hereditary hemorrhagic telangiectasia (HHT), also known as Osler-Weber-Rendu syndrome, is a rare inherited disorder characterized by abnormal blood vessel formation in the skin, mucous membranes, and organs including the lungs, liver, and central nervous system.
Epidemiology
Worldwide prevalen...
Article
High riding jugular bulb
A high riding jugular bulb indicates the dome (roof) of the jugular bulb extends more superiorly in the petrous temporal bone than is typical. The transverse level above which a jugular bulb is considered high riding has been variably defined as the following 1,6,8:
floor of the internal acoust...
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
Mitral annular calcification
Mitral annular calcification refers to the deposition of calcium (along with lipid) in the annular fibrosa of the mitral valve.
Epidemiology
Annular calcification is seen in up to 35% of elderly patients. It is common in females over 65 years, in those with myxomatous degeneration of the mitra...
Article
Mixed vascular malformation
A mixed vascular malformation is a relatively common congenital cerebral vascular malformation, most frequently composed of a developmental venous anomaly and a cavernous malformation. As developmental venous anomalies seldom bleed, the risk of a mixed vascular malformation is determined by the ...
Article
Moyamoya disease
Moyamoya disease is an idiopathic, non-inflammatory, non-atherosclerotic progressive vaso-occlusive disease involving the terminal supraclinoid internal carotid arteries and circle of Willis.
Terminology
The term moyamoya disease should be reserved for an idiopathic, sometimes familial, cond...
Article
PHACE syndrome
PHACE syndrome, also known as cutaneous hemangioma–vascular complex syndrome or Pascual-Castroviejo type II syndrome, is a phakomatosis that comprises of:
P: posterior fossa malformations (e.g. Dandy-Walker malformation)
H: hemangiomas
A: arterial anomalies
C: coarctation of the aorta and ca...
Article
Pericardial calcification
Pericardial calcification is usually seen in individual patients with a history of pericarditis and may be associated with constrictive pericarditis.
Pathology
Although historically infective pericarditis was the most common cause, a wide variety of insults can lead to calcification of the pe...
Article
Popliteal artery aneurysm
Popliteal artery aneurysms are the most common peripheral arterial aneurysm and the second most common aneurysm after abdominal aortic aneurysms.
Epidemiology
Overall, popliteal artery aneurysms are uncommon. They occur almost exclusively in males (up to 97%) for unknown reasons 8-9. There is ...
Article
Portal hypertension
Portal hypertension is defined as a hepatic venous pressure gradient (HVPG) >5 mmHg. Hepatic venous pressure gradient is a surrogate for the portosystemic pressure gradient. Clinically significant portal hypertension is defined as a gradient >10 mmHg and variceal bleeding may occur at a gradient...