LONG QUIZ 2 (2nd shifting) Flashcards
Vaculitides with unknown pathogenesis
Giant cell arteritis
Takayasu arteritis
Polyarteritis nodosa
CONGENITAL ANOMALIES
BERRY ANEURYSM
ARTERIOVENOUS FISTULA
FIBROMUSCULAR DYSLPASIA
Abnormal , small direct connection between artery and vein
ARTERIOVENOUS FISTULA
Focal, irregular thickening of and attenuation of the arterial
wall Due to intimal and medial hyperplasia and fibrosis
FIBROMUSCULAR DYSLPASIA
Outpouchings in cerebral vessels
BERRY ANEURYSM
3 patterns of arteriosclerosis
- Atherosclerosis
- Monckeberg medial sclerosis
- Arteriosclerosis
Calcific deposits in muscular arteries in person
typically older than 50 y/o
Monckeberg medial sclerosis
Affects small arteries and arterioles
Hyaline or hyperplastic
Associated with hypertension and DM
Arteriosclerosis
Characterized by intimal lesions called atheromas
(atheromatous or atherosclerotic plaques) that protrude in the vessel lumens
Atherosclerosis
Atherosclerosis Cause pathology by the ff mechanisms
- Mechanical obstruction of flow
- Rupture leading to thrombosis
- Weakening of the underlying vessel wall, leading to
aneurysm
Major risk factors of Atherosclerosis
o Family history o Hypercholesterolemia o Hypertension o Smoking o Diabetes
Oxidized LDLs are ingested by macrophages, causing
formation of?
Foam cells
infections detected in atherosclerotic plaques
Herpes, CMV, and Chlamydia pneumonia
Consequences of atherosclerosis
Atherosclerotic Stenosis Acute Plaque change Thrombosis Vasoconstriction Vessel wall weakening
plaques that have large deformable cores, thin
fibrous caps, more inflammatory cell content
Vulnerable plaques
plaques with minimal core and thicker, well collagenized fibrous caps, less inflammation
Stable plaques
Rapidly rising BP; Leads to death if untreated within 1 to 2 years
malignant hypertension
Mechanisms of essential HPN
o Genetic factors
o Reduced renal sodium excretion
o Vasoconstrictive influences
o Environmental factors
SINGLE GENE DISORDERS related to HPN
Liddle syndrome
Involved in aldosterone
metabolism
MORPHOLOGIC CHANGE IN HYPERTENSION
Hyaline arteriosclerosis
Hyperplastic arteriosclerosis
Benign nephrosclerosis assoc w/?
Hyaline arteriosclerosis
Necrotizing arteriolitis in the kidney
Hyperplastic arteriosclerosis
Onion skin
Hyperplastic arteriosclerosis
Localized abnormal dilation of a blood vessel or wall of the
heart
Aneurysms
Aneurysm bounded by arterial wall components
True Aneurysm
breach in the vascular wall leading to extravascular
hematoma
False Aneurysm
types of true aneurysms
- Atherosclerotic
- Syphilitic
- Congenital vascular aneurysms
- Ventricular aneurysms that follow transmural MI
arises when blood enters the arterial wall itself, as a
hematoma dissecting between its layers
Arterial dissection
2 most important disorders that predispose to aortic aneurysms
atherosclerosis
HPN
embolization of a septic embolus; complication of infective endocarditis
Mycotic aneurysms
Two variants of Abdominal aortic aneurysms
Inflammatory
Mycotic
bacteremia from a primary Salmonella gastroenteritis may cause this type of AAA
Mycotic
Obliterative endarteritis characteristic of tertiary stage of syphilis
Syphilitic Aneurysm
tree barking/wrinkling of the aortic intima
Syphilitic Aneurysm
“cor bovinum”
Syphilitic Aneurysm
most frequent preexisting histologically detectable lesion in aortic dissections
Medial Degeneration
heterogenous group of diseases characterized by inflammatory cell infiltration and necrosis of blood vessel wall
Vasculitides
Anti-neutrophil cytoplasmic antibody (ANCA)-mediated vasculitides
Wegener granulomatosis
Churg-Strauss
Microscopic polyangitis
LARGE VESSEL VASCULITIS
Giant cell arteritis
Takayasu’s arteritis
Medium arteries Vasculitis
Classical Polyarteritis Nodosa
Kawasaki disease
Small vessels and medium arteries vasculitis
Wegener’s granulomatosis
Churg-Strauss syndrome
Microscopic polyangiitis
Small vessels
Leucocytoclastic
Henoch-Schonlein Purpura
cryoglobulinaemia
granulomatous arteritis of aorta and major branches, predilection for extracranial branch of carotid artery, often temporal artery; px > 50 y/o
GIANT CELL (TEMPORAL) ARTERITIS
most common form of vasculitis among elderly individuals in the United States and Europe
GIANT CELL (TEMPORAL) ARTERITIS
type of inflam of Giant cell arteritis
granulomatous inflammation
granulomatous inflammation of aorta and its major branches; px < 50 y/o
TAKAYASU ARTERITIS
TAKAYASU ARTERITIS aka?
pulseless disease
manifests with transmural fibrous thickening of the aorta and severe luminal narrowing of the major branch vessels
Takayasu arteritis
necrotizing inflammation of medium-sized or small arteries w/o glomerulonephritis or vasculitis in arterioles, capillaries or venules
POLYARTERITIS NODOSA
POLYARTERITIS NODOSA typically involving renal and visceral vessels but sparing the?
pulmonary circulation
Impaired perfusion resulting in ulcerations, infarcts, ischemic atrophy, or hemorrhages (1st sign of disease)
POLYARTERITIS NODOSA
arteritis of large, medium, and small arteries associated with mucocutaneous LN syndrome, often in children
KAWASAKI DISEASE
leading cause of acquired heart disease in children
KAWASAKI DISEASE
Eosinophil rich and granulomatous inflammation involving respiratory tract and necrotizing vasculitis, assoc with asthma and blood eosinophilia
CHURG-STRAUSS SYNDROME (ALLERGIC GRANULOMATOSIS AND ANGIITIS)
Major aassociations of CHURG-STRAUSS SYNDROME
o Cutaneous involvement (palpable purpura)
o GIT bleeding
o renal disease (primarily as focal and segmental glomerulosclerosis
Granulomatous inflammation involving respiratory tract and necrotizing vasculitis of small to medium sized vessels. necrotizing glomerulonephritis common
WEGENER’S GRANULOMATOSIS
WEGENER’S GRANULOMATOSIS is Characterized by a triad of:
Acute necrotizing granuloma
Necrotizing or granulomatous vasculitis
glomerulonephritis
necrotizing vasculitis with few or no immune deposits affecting small vessel
MICROSCOPIC POLYANGIITIS/POLYARTERITIS
MICROSCOPIC POLYANGIITIS/POLYARTERITIS is also called
hypersensitivity vasculitis or leukocytoclastic vasculitis
Pauci-immune injury (Devoid of immune complexes)
MICROSCOPIC POLYANGIITIS/POLYARTERITIS
Segmental thrombosing acute and chronic inflammation of medium-sized and small arteries, principally tibial and radial arteries, sometimes secondarily extending to veins and nerves of extremities
THROMBOANGIITIS OBLITERANS (BUERGER DISEASE)
Early manifestations OF THROMBOANGIITIS OBLITERANS (BUERGER DISEASE)
o superficial nodular phlebitis
o cold sensitivity of the Raynaud type in the hands
o Instep claudication
Paroxysmal pallor or cyanosis of digits of hands or feet and,
infrequently the tips of nose or ears owing to cold-induced
vasoconstriction of digital arteries, precapillary arterioles,
and cutaneous AV shunts
RAYNAUD PHENOMENON
Structural changes absent, intimal thickening in late course; Exaggeration of normal central and local vasomotor response to cold or emotion
RAYNAUD PHENOMENON
Refers to arterial insufficiency of extremities caused by
various conditions including: SLE, scleroderma,
atherosclerosis, Buerger disease
SECONDARY RAYNAUD PHENOMENON
Abnormally dilated tortuous veins produced by prolonged
increased intraluminal pressure and loss of vessel wall
support
VARICOSE VEIN
Two other sites of varicose veins
esophageal varices, hemorrhoids
stasis dermatitis manifestation
VARICOSE VEIN
result from primary varicose dilation of the venous plexus
at the anorectal junction
hemorrhoids
designations for venous thrombosis and inflammation
Thrombophlebitis and phlebothrombosis
venous
thromboses appear in one site, disappear, and then reoccur
in other veins
Migratory thrombophlebitis (Trousseau sign)-
affected lymphatics are dilated and filled with an exudate of neutrophils and monocytes
Lymphadenitis
produce readily recognizable vascular channels filled with blood cells or lymphatics with transudate, lined by layer of normal endothelial cells without atypia
Benign tumors
are more solidly cellular with cytologic anaplasia, mitotic figures, do no form well organized vessels
Malignant tumors
Malignant neoplasms
o Angiosarcoma
o Hemangiopericytoma