dr. budiana tanurahardja.,sppa - universitas...
TRANSCRIPT
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dr. Budiana Tanurahardja.,SpPA
DEPARTMENT of ANATOMIC PATHOLOGYDEPARTMENT of ANATOMIC PATHOLOGYFACULTY of MEDICINE UNIVERSITY of INDONESIAFACULTY of MEDICINE UNIVERSITY of INDONESIA
Center of Anatomic Pathology Studies
Vascular pathology
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Vascular Pathology
• Normal blood vessels.• Aneurysms.• Hypertension.• Vasculitis.• Varices.• Neoplasms.
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Normal blood vessels
• Arteries : - large/elastic• - medium size/muscular/distribute• - small arteries ( < 2 mm ).• Arterioles : 20 - 100 u .• Capillaries: 7 - 8 u.• Postcapillary venules.• Collecting venule.
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Normal blood vessels
• Veins : - small.• - medium.• - large.• Lymphatic.• The main components : - endothelial cells.• - smooth muscles.• Tn. intima, tn.media, tn.adventitia.
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Normal blood vessels
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Normal blood vessels
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Normal blood vessels• Main cellular components : endothelial
cells, smooth muscle cells• Endothel : - Weibel- Palade bodies 0,1x0,3u • storage organelle for vWF.• - IHC : antibody to vWF (factor VIII related
Ag) ; CD31• Vascular abnormalities caused by 2 mecha : • - narrowing/complete obstruction• - weakening of the walls : dilatation/rupture
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Aneurysm• Aneurysm is localized abnormal dilatation of
blood vessel.• True and false.• Saccular and fusiform.• Etiology: atherosclerosis, cystic medial
degeneration, congenital, infection (mycotic aneurysm), syphilis, trauma,systemic dis., immunologic.
• Dissecting aneurysm: blood enters the wall of the artery, dissecting the layers.
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Berry aneurysm
• Occurrence among patient with heritable systemic disorders ( autosomal dominant polycystic kidney, Ehlers-Danlos syndrome type IV,neurofibromatosis type I, Marfan syndrome), and fibromuscular dysplasia of arteries and coarctation of aorta.
• Cigarette smoking and hypertension ( 54 % of the patient)
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Berry aneurysm• Saccular aneurysm.• The most frequent cause of subarachnoid
haemorrhage --> circle of Willis.• The 4th most common CVA after:
atherosclerotic thrombosis, embolism and hypertensive haemorrhage.
• 2 % in autopsy.• Pathogenesis: unknown.• Genetic factor may be important.
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Berry aneurysm
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Berry aneurysm
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Aneurysm
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Dissecting aneurysm
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Hypertensive vascular disease
• Hypertension : elevated blood pressure diastole : > 90 mm Hg.
• Systole : > 140 mm Hg.• 90%-95%: idiopathic (essential hypertension}• 5%-10 : secondary : renal ,endocrine,
cardiovascular, neurologic.
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Classification of blood pressure in adults
Category systolic diastolicNormalHigh normalHypertension:Stage 1 (mild)Stage 2 (moderate)Stage 3 (severe )Stage 4 (very severe)
< 130130-139
140-159160-179180-209> 210
< 8585-89
90-99100-109110-119> 120
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Morphology
• Hyaline arteriolosclerosis: - in elderly patients normotensive or hypertensive, but more generalized and severe in hypertensive.
• - common in diabetes.• Hyperplastic arteriolosclerosis: - related to
severe acute elevation of blood pressure (diastole > 110 mmHg). – laminated thickening of the walls of arteriole that consist of smooth muscle cells and reduplicated basement membrane.
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Arteriolosclerosis• Elderly patient:
normal/hypertensive.• Diabetes.• Leakage plasma
component ,matrix production by smooth muscle cells -> hyaline deposition.
• benign nephrosclerosis.
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Arteriolosclerosis
• Acute /severe hypertension.
• Onion skin• often : accompanied by
deposits of fibrinoid and acute necrosis --> necrotizing arteriolitis(kidney)
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Vasculitis• Inflammation of the walls of the vessels.• Classification :-direct infection: bacterial,
rickettsial, spirochaetal, fungal, viral.• Immunologic:-immunecomplex mediated:SLE,
RA• -ANCA(antineutrophil cytoplasmic autoAb
mediated: Wegener granlms,microscopic polyangiitis, Churg-Strauss syndr.
• -direct antibody attack mediated: Goodpasture, Kawasaki (antiendothelial)
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Vasculitis
• -cell mediated: allograft organ rejection, IBD, paraneoplastic vasculitis.
• -unknown: giant cell temporal arteritis, Takayasu arteritis, PAN.
• Other classification: large vessel vasculitis(giant cell,Takayasu) , medium-sized vessel vasculitis (PAN, Kawasaki), small cell vasculitis(Wegener ).
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Vasculitis
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Thromboangiitis obliterans
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Vein and lymphatics• Varicose veins (varices): abnormally dilated,
tortuous veins produced by prolonged, increased intraluminal pressure.
• Thrombophlebitis and phlebothrombosis.• Lymphangitis and lymphedema :
lymphangitis caused by bacterial infection group A beta hemolytic streptococcus.
• Lymphedema caused by occlusion of lymphatic drainage.
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Varicose veins• Pathogenesis: obese persons have greater
tendency poor tissue support. • The most important factor is posture long
periods of standing . Even in normal person simple orthostatic edema.
• Other conditions : pregnancy, intravascular thrombosis, tumor mass.
• Micros : variation in thickness dilation and hypertrophy of smooth muscle and subintimal fibrosis, degeneration of elastic tissue, and spotty calcification in the media (phlebosclerosis).
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Varices
• Statis dermatitis.• Varicose ulcers.
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Neoplasm• Benign : -hemangioma: capillary,cavernous.• -lymphangioma: capillary,cavernous.• -pyogenic granuloma(lobular capillary)• -glomus tumor.• Intermediate grade neoplasms.• - Kaposi sarcoma.• - Hemangioendothelioma• - hemangiopericytoma.• Malignant neoplasm.• - angiosarcoma.
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Congenital cavernous hemangioma
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Haemangioma
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Angiosarcoma
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