Items tagged “vascular”
80 results found
Article
Pseudovein sign (bowel)
The pseudovein sign can occur with active gastrointestinal bleeding where contrast extravasation during angiography may have a curvilinear appearance as it pools in the gastric rugae or mucosal folds of bowel, mimicking the appearance of a vein. However, contrast in the “pseudovein” persists bey...
Article
Scimitar syndrome
Scimitar syndrome, also known as hypogenetic lung syndrome, is characterized by a hypoplastic lung that is drained by an anomalous pulmonary vein into the systemic venous system. It is a type of partial anomalous pulmonary venous return and is one of the several findings in congenital pulmonary ...
Article
Spetzler-Martin arteriovenous malformation grading system
The Spetzler-Martin arteriovenous malformation (AVM) grading system allocates points for various angiographic features of intracranial arteriovenous malformations to give a score that predicts the morbidity/mortality risk of surgery 5.
Grading
The grading system requires correlation between C...
Article
Tumor thrombus
Tumor thrombus is defined as tumor extending into a vessel, typically a vein. It occurs in a wide variety of malignancies. It is vital to distinguish tumor thrombus from "bland" thrombus (free of neoplastic cells) in the setting of neoplasia, as this often impacts staging and treatment approach....
Article
Vascular anatomical variants
Vascular anatomical variants are common:
aortic variants
thoracic aorta
ascending aorta
aortic arch
descending aorta
abdominal
SVC and IVC - caval variants
intracranial arteries - variants
Case
Mitral annular calcification
Published
07 May 2008
91% complete
X-ray
Photo
Article
Renal artery stenosis
Renal artery stenosis (RAS) (plural: stenoses) refers to a narrowing of a renal artery. When the process occurs slowly, it leads to secondary hypertension. Acute renal artery stenosis does not lead to hypersecretion of renin.
Pathology
When the stenosis occurs slowly, collateral vessels form a...
Article
Hyperreninaemic hypertension (differential)
Hyperreninaemic hypertension may have many causes including:
renal artery stenosis
renal secreting tumor, e.g. renal cell carcinoma, reninoma
renal compression: large renal mass, subcapsular hemorrhage (Page kidney)
Article
Endovascular aneurysm repair
Endovascular aneurysm repair (EVAR) was first pioneered in the early 1990s. Since then, the technology of the devices has rapidly progressed, and EVAR is now widely used to treat thoracic and abdominal aortic aneurysms (AAA).
The advantages of endovascular repair over open repair are that it is...
Article
Transverse sinus
The paired left and right transverse sinuses, or lateral sinuses, are major dural venous sinuses and arise from the confluence of the superior sagittal, occipital and straight sinuses at the torcular herophili (confluence of sinuses).
On each side, the transverse sinus then runs in the lateral ...
Case
Arteriovenous malformation of the gluteus
Published
03 Feb 2010
88% complete
DSA (angiography)
Case
Renal osteodystrophy
Published
09 Jul 2010
74% complete
CT
Case
Kissing carotids
Published
28 Aug 2010
77% complete
MRI
Article
Hepatopulmonary syndrome
Hepatopulmonary syndrome (HPS) is a clinical syndrome defined by the presence of the following:
liver disease
dilation of pulmonary vasculature
may involve pulmonary capillaries, pulmonary arteriovenous malformations (AVMs), or pleural arteriovenous malformations
abnormalities in oxygenation...
Article
Ruptured saccular aneurysm
Ruptured saccular (berry) aneurysms usually result in subarachnoid hemorrhage (SAH) but can, depending on the location of the rupture and presence of adhesions to the aneurysm, also result in cerebral hematoma, subdural hematoma, and/or intraventricular hemorrhage.
Epidemiology
Saccuar aneurys...
Article
Duplication of inferior vena cava
Duplication of the inferior vena cava is a relatively rare but well described vascular anomaly. This caval abnormality had an increased association with renal anomalies like crossed fused ectopia or circumaortic renal collar 1,2.
Epidemiology
The incidence of inferior vena cava duplication is ...
Case
Common carotid arterial pseudoaneurysm
Published
23 Nov 2012
92% complete
CT
Case
Iatrogenic arterial pseudoaneurysm
Published
11 Dec 2012
62% complete
CT
Case
Chronic contained rupture of abdominal aortic aneurysm
Published
14 Dec 2012
95% complete
CT
Case
Subarachnoid hemorrhage
Published
20 Apr 2013
92% complete
MRI
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