Dissection (medical)

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Dissection (medical)
Classification and external resources
Aortic dissection
ICD-9	441.0, 443.2
MeSH	D000784

In medical pathology, dissection (or, incorrectly, dissecting aneurysm) refers to a tear within the wall of a blood vessel, which allows blood to separate the wall layers, creating a pseudoaneurysm.

Types [edit]

Examples include:

Carotid and vertebral artery dissection are grouped together as "cervical artery dissection".

Cardiovascular disease: vascular disease · Circulatory system pathology (I70–I99, 440–456)

Arteries, arterioles
and capillaries

Inflammation

Arteritis (Aortitis) · Buerger's disease

Arterial occlusive disease/
peripheral vascular disease

Arteriosclerosis	Atherosclerosis (Foam cell, Fatty streak, Atheroma, Intermittent claudication) · Monckeberg's arteriosclerosis · Arteriolosclerosis (Hyaline, Hyperplastic, oxycholesterol, cholesterol, LDL, trans fat)

Stenosis	Renal artery stenosis · Carotid artery stenosis

Other	Fibromuscular dysplasia · Degos disease · Aortoiliac occlusive disease · Raynaud's phenomenon/Raynaud's disease · Erythromelalgia

Aneurysm/dissection/
pseudoaneurysm

torso: Aortic aneurysm (Thoracic aortic aneurysm, Abdominal aortic aneurysm) · Aortic dissection · Coronary artery aneurysm

head/neck: Cerebral aneurysm · Intracranial berry aneurysm · Carotid artery dissection · Vertebral artery dissection · Familial aortic dissection

Vascular malformation

Arteriovenous malformation · Arteriovenous fistula · Telangiectasia (Hereditary hemorrhagic telangiectasia)

Vascular nevus

Spider angioma · Halo nevus · Cherry hemangioma

Veins

Inflammation	Phlebitis

Venous thrombosis/ Thrombophlebitis	primarily lower limb (Deep vein thrombosis) abdomen (Hepatic veno-occlusive disease, Budd–Chiari syndrome, May-Thurner syndrome, Portal vein thrombosis, Renal vein thrombosis) upper limb/torso (Paget-Schroetter disease, Mondor's disease) head (Cerebral venous sinus thrombosis) Post-thrombotic syndrome

Varicose veins	Varicocele · Gastric varices · Portacaval anastomosis (Hemorrhoid, Esophageal varices, Caput medusae)

Other	Superior vena cava syndrome · Inferior vena cava syndrome · Venous ulcer · Chronic venous insufficiency · Chronic cerebrospinal venous insufficiency

Arteries or veins

Vasculitis · Thrombosis · Embolism (Pulmonary embolism, Cholesterol embolism, Paradoxical embolism) · Angiopathy (Macroangiopathy, Microangiopathy)

Blood pressure

Hypertension	Hypertensive heart disease · Hypertensive nephropathy · Essential hypertension · Secondary hypertension (Renovascular hypertension) · Pulmonary hypertension · Malignant hypertension · Benign hypertension · Systolic hypertension · White coat hypertension

Hypotension	Orthostatic hypotension