Difference between revisions of "Vascular disease"
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==Fibromuscular dysplasia== | ==Fibromuscular dysplasia== | ||
*Abbreviated ''FMD''. | |||
===General=== | ===General=== | ||
Etiology: | Etiology: | ||
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Gender: | Gender: | ||
*Women > men. | *Women > men. | ||
*May be seen in virtually any artery. | |||
*Reported as a cause of sudden death with involvement of the artery supplying the AV node.<ref name=pmid17179675>{{Cite journal | last1 = Lee | first1 = S. | last2 = Chae | first2 = J. | last3 = Cho | first3 = Y. | title = Causes of sudden death related to sexual activity: results of a medicolegal postmortem study from 2001 to 2005. | journal = J Korean Med Sci | volume = 21 | issue = 6 | pages = 995-9 | month = Dec | year = 2006 | doi = | PMID = 17179675 | URL = http://jkms.kams.or.kr/fulltext/html/jkms21995h.html }}</ref> | |||
===Gross/radiologic=== | ===Gross/radiologic=== | ||
| Line 158: | Line 162: | ||
*Luminal narrowing. | *Luminal narrowing. | ||
Images: | |||
*[http://www.brown.edu/Courses/Digital_Path/systemic_path/cardio/fibromuscular-dysplasia.html FMD (brown.edu)]. | *[http://www.brown.edu/Courses/Digital_Path/systemic_path/cardio/fibromuscular-dysplasia.html FMD (brown.edu)]. | ||
*[http://jkms.kams.or.kr/fulltext/image/jkms21995f3.jpg FMD of AV nodal artery (kams.or.kr)].<ref name=pmid17179675/> | |||
===Stains=== | ===Stains=== | ||
*[[Elastic trichrome]] or [[Movat stain]] - to demonstrate elastic fibre fragmentation. | *[[Elastic trichrome]] or [[Movat stain]] - to demonstrate elastic fibre fragmentation. | ||
Revision as of 15:10, 18 December 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 |
| Internal elastic lamina | prominent/thick, usu. complete | thin & incomplete |
| External elastic lamina | present, thick | absent |
| Shape | circular / lumen wide open | collapsed |
| Wall thickness | thick | thin |
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
General
Associations
Heritable:[3]
- Marfan's syndrome.
- Loeys-Dietz syndrome.[4]
- Marfan-like syndrome.
- Ehlers-Danlos syndrome.
- Bicuspid aortic valve.
Others:
- Tertiary syphilis.
Classification
Two classification exist:
- DeBakey.
- Stanford.
Stanford dissection classification:[5]
- Type A - aortic root to the left subclavian artery.
- Considered a surgical emergency.
- Type B - distal to (left) subclavian artery.
- Generally, treated conservatively.
Microscopic
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:
- www:
- WC:
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:[9]
- Medial calcification (purple irregular stuff -- calcium phosphate).
Note:
- Lumen unaffected.
Images:
Hyperplastic arteriolosclerosis
General
- Hyperplasia = proliferation of cells.
- Associated with:[10]
- Malignant hypertension.
- Scleroderma.
Microscopic
Features:[9]
- Onion-skin appearance of intima & media due to:
- Intimal hyperplasia.
- Smooth muscle hyperplasia.
Image: Hyperplastic arteriolosclerosis (utah.edu).
Fibromuscular dysplasia
- Abbreviated FMD.
General
Etiology:
- Unknown, possibly genetic.
Gender:
- Women > men.
- May be seen in virtually any artery.
- Reported as a cause of sudden death with involvement of the artery supplying the AV node.[11]
Gross/radiologic
- Segmental - thinning and thickening.[12]
Classical locations:[12]
- Renal artery - leading to hypertension.
- Carotid artery.
Microscopic
Features:[12]
- Smooth muscle hyperplasia - key feature.
- Elastic fibre fragmentation.
- Luminal narrowing.
Images:
Stains
- Elastic trichrome or Movat stain - to demonstrate elastic fibre fragmentation.
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.
- ↑ Finkelmeier BA (September 1997). "Dissection of the aorta: a clinical update". J Vasc Nurs 15 (3): 88-93. PMID 9362838.
- ↑ 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.
- ↑ 9.0 9.1 Klatt, Edward C. (2006). Robbins and Cotran Atlas of Pathology (1st ed.). Saunders. pp. 7. ISBN 978-1416002741.
- ↑ URL: http://library.med.utah.edu/WebPath/IMMHTML/IMM028.html. Accessed on: 11 May 2011.
- ↑ 11.0 11.1 Lee, S.; Chae, J.; Cho, Y. (Dec 2006). "Causes of sudden death related to sexual activity: results of a medicolegal postmortem study from 2001 to 2005.". J Korean Med Sci 21 (6): 995-9. PMID 17179675.
- ↑ 12.0 12.1 12.2 Hata, D. (Sep 2001). "Fibromuscular dysplasia.". Intern Med 40 (9): 978-9. PMID 11579971.