Difference between revisions of "Vascular disease"
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The article covers '''vascular disease'''. Vasculitides are covered in a separate article called ''[[vasculitides]]''. | The article covers '''vascular disease''', i.e. diseases of blood vessels. Vasculitides are covered in a separate article called ''[[vasculitides]]''. | ||
==Normal blood vessels== | ==Normal blood vessels== | ||
Revision as of 17:18, 13 January 2011
The article covers vascular disease, i.e. diseases of blood vessels. Vasculitides are covered in a separate article called vasculitides.
Normal blood vessels
Comparing arteries and veins:[1]
| Feature | Artery | Vein |
| Elastin | thick/prominent - esp. EEL | thin incomplete IEL, no EEL |
| Shape | circular / lumen wide open | collapsed |
| Wall thickness | thick | thin |
Abbreviations: IEL = internal elastic lamina, EEL = external elastic lamina.
Great vessels
When things go wrong here, you see a cardiac surgeon.
Atherosclerosis
General
- Coronary artery atherosclerosis -> myocardial infarction, coronary thrombosis.
- Peripheral artery atherosclerosis -> peripheral vascular disease -> amputations.
- Carotid artery atherosclerosis -> thrombotic stroke.
Clinical risk factors:
- Age.
- Blood pressure - modifiable (antihypertensives).
- Cholesterol - modifiable (statins, diet).
- Diabetes mellitus - modifiable (hypoglycemic medications, diet, lifestyle).
- Smoking - modifiable (cessation).
- Family history.
Microscopic
Features:
- Intimal hyperplasia.
- Lipid deposition.
- Foamy macrophages within intima & media.
- Cholesterol clefts
- Luminal narrowing.
Image:
Notes:
- Considered "complex" if any of the following are present:[2]
- Calcifications.
- Thrombosis.
- Haemorrhage.
Aortic dissection
Associations
Heritable:[3]
- Marfan's syndrome.
- Loeys-Dietz syndrome.[4]
- Marfan-like syndrome.
- Ehlers-Danlos syndrome.
- Bicuspid aortic valve.
Others:
- Tertiary syphilis.
Cystic medial degeneration
General
Microscopic
- Basophilic ground substance in the media (seen on Movat's stain).
- Disruption of the elastic lamina (seen on elastic trichrome stain).
- +/-Focal necrosis.
Images: Marfan's syndrome (radiographics.rsna.org).
Medial calcific sclerosis
- AKA Moenckeberg medial calcific sclerosis, calcific medial sclerosis of Monckeberg, and Monckeberg's arteriosclerosis.
General
- Usually of no clinical consequence.
Microscopic
Features:[8]
- Medial calcification (purple irregular stuff -- calcium phosphate).
Note:
- Lumen unaffected.
Images:
Hyperplastic arteriolosclerosis
General
- Hyperplasia = proliferation of cells.
- Associated with malignant hypertension.
Microscopic
Features:[8]
- Onion-skin appearance of intima & media due to:
- Intimal hyperplasia.
- Smooth muscle hyperplasia.
Image: Hyperplastic arteriolosclerosis (utah.edu).
See also
References
- ↑ URL: http://www.lab.anhb.uwa.edu.au/mb140/corepages/vascular/vascular.htm. Accessed on: 13 January 2011.
- ↑ Klatt, Edward C. (2006). Robbins and Cotran Atlas of Pathology (1st ed.). Saunders. pp. 4. ISBN 978-1416002741.
- ↑ Gleason TG (2005). "Heritable disorders predisposing to aortic dissection". Semin. Thorac. Cardiovasc. Surg. 17 (3): 274-81. doi:10.1053/j.semtcvs.2005.06.001. PMID 16253833.
- ↑ Loeys BL, Schwarze U, Holm T, et al (August 2006). "Aneurysm syndromes caused by mutations in the TGF-beta receptor". N. Engl. J. Med. 355 (8): 788-98. doi:10.1056/NEJMoa055695. PMID 16928994. http://content.nejm.org/cgi/content/full/355/8/788.
- ↑ URL: http://emedicine.medscape.com/article/756835-overview. Accessed on: 12 August 2010.
- ↑ URL: http://emedicine.medscape.com/article/756835-overview. Accessed on: 12 August 2010.
- ↑ Ha HI, Seo JB, Lee SH, et al. (2007). "Imaging of Marfan syndrome: multisystemic manifestations". Radiographics 27 (4): 989–1004. doi:10.1148/rg.274065171. PMID 17620463. http://radiographics.rsna.org/content/27/4/989.full.
- ↑ 8.0 8.1 Klatt, Edward C. (2006). Robbins and Cotran Atlas of Pathology (1st ed.). Saunders. pp. 7. ISBN 978-1416002741.