Articles
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1,384 results found
Article
Tandem lesion (cerebrovascular)
Tandem lesion, or tandem occlusion, is a term used in cerebrovascular imaging and intervention to refer to the simultaneous presence of high-grade stenosis or occlusion of the cervical internal carotid artery and thromboembolic occlusion of the intracranial terminal internal carotid artery or it...
Article
External jugular vein tributaries (mnemonic)
A mnemonic to remember external jugular vein (formed by the posterior division of the retromandibular and posterior auricular veins) tributaries is:
PAST
Mnemonic
P: posterior external jugular vein
A: anterior jugular vein
S: suprascapular vein
T: transverse cervical vein
Article
Capillary blush (cerebral)
Capillary blush (or angiographic blush), arteriovenous shunting and early venous filling are terms variably used in digital subtraction cerebral angiography following reperfusion of thromboembolic ischemic stroke to denote the appearance of the reperfused tissue. They are related to each other a...
Article
Common facial vein
The common facial vein is formed by the joining of the facial vein and the anterior branch of the retromandibular vein. It is part of the venous drainage system of the face.
Summary
origin and termination: the facial vein (along with the facial artery) pierces the deep investing fascia of the ...
Article
Facial vein
The facial vein (previously known as the anterior facial vein) is the continuation of the angular vein and joins the anterior branch of the retromandibular vein to form the common facial vein 1-3.
Gross anatomy
At the level of the lower margin of the orbit, the angular vein becomes the facial ...
Article
Superficial temporal vein
The superficial temporal vein arises in a plexus on the side and vertex of the skull and, in the substance of the parotid gland, joins with the maxillary vein to form the retromandibular vein.
Gross anatomy
The superficial temporal vein originates from a venous plexus on the side and vertex of...
Article
Posterior auricular vein
The posterior auricular vein is tributary of the external jugular vein or retromandibular vein.
Gross anatomy
Origin and course
It arises over the mastoid process of the temporal bone draining the skin behind the ear and courses anteriorly into the parotid gland, draining into the external ju...
Article
Cerebral air embolism
Cerebral air embolism is rare but can be fatal. The source of emboli can be venous or arterial and is usually iatrogenic.
Clinical presentation
Presentation is variable and non-specific but includes confusion, motor weakness, decreased consciousness, seizure, and loss of vision.
Pathology
...
Article
Anterior choroidal artery syndrome
Anterior choroidal artery syndrome is a rare entity caused by cerebral infarction in the anterior choroidal artery territory.
Clinical presentation
In its complete form, the syndrome is characterized by the triad of 7:
contralateral hemiplegia
contralateral hemisensory loss
contralateral ho...
Article
Viscera
The viscera (singular: viscus) refers to all the internal organs within the major cavities of the thorax, abdomen and pelvis. Therefore it does not include organs of the CNS, head and neck or musculoskeletal compartments nor does it encompass non-internal organs (e.g. the skin) 1.
Splanchnology...
Article
Pulmonary veins
The pulmonary veins drain oxygenated blood from the lungs to the left atrium. A small amount of blood is also drained from the lungs by the bronchial veins.
Gross anatomy
There are typically four pulmonary veins, two draining each lung:
right superior: drains the right upper and middle lobes
...
Article
Proatlantal artery
The proatlantal artery is one of the persistent carotid-vertebrobasilar anastomoses, and can be subdivided into two types depending on its origin:
type I: (~55%)
corresponds to the first segmental artery
arises from the internal carotid artery
also known as the proatlantal intersegmental art...
Article
Terson syndrome
Terson syndrome refers to intraocular hemorrhage in patients with intracranial hemorrhage.
Terminology
The traditional definition of Terson syndrome was vitreous hemorrhage associated with subarachnoid hemorrhage. However, there is also a broader definition which captures intraocular hemorrhag...
Article
Carotid endarterectomy
Carotid endarterectomy (CEA) is a surgical procedure that involves removing atherosclerotic plaque causing internal carotid artery stenosis to prevent ischemic stroke. It can be used in both the setting of symptomatic and asymptomatic carotid stenosis.
Percutaneous carotid arterial stenting (CA...
Article
Pampiniform plexus
The pampiniform plexus (plural: plexuses) is the venous network of approximately 10 veins draining the testis and epididymis in males, and the ovary in females.
In females, the plexus draining the ovary is found within the broad ligament adjacent to the ovary and fallopian tube. Each network co...
Article
Artery of Percheron
The artery of Percheron is a variant of the posterior cerebral circulation characterized by a solitary arterial trunk that supplies blood to the paramedian thalami and the rostral midbrain bilaterally. From the original classification of arterial patterns at the origin of the paramedian arteries...
Article
Lateral circumflex femoral artery
The lateral circumflex femoral artery is a branch of the profunda femoris artery that arises from its lateral aspect just after the medial circumflex femoral artery.
While the medial circumflex runs posteriorly around the femoral neck, the lateral circumflex courses laterally from its origin an...
Article
Descending branch of the lateral circumflex femoral artery
The descending branch of the lateral circumflex femoral artery descends from the lateral aspect of the femoral neck and extends as far as the knee where it provides blood to the patellar network (the complex arterial anastomosis around the knee).
Summary
origin: lateral circumflex femoral arte...
Article
Medial circumflex femoral artery
The medial circumflex femoral artery is usually a branch of the profunda femoris that arises close to its origin, usually before the origin of the lateral circumflex femoral artery. It provides blood to the femoral neck and damage to the artery or involvement of it in pathological processes may ...
Article
Angioplasty
Angioplasty, also called balloon angioplasty or percutaneous transluminal angioplasty (PTA), is a minimally invasive interventional procedure in which an inflatable balloon-tipped catheter is introduced through the skin into the vascular lumen to open a stenotic segment of the vessel. Angioplast...
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