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===Microscopic=== | ===Microscopic=== | ||
Features:<ref> | Features - both #1 and #2 are required:<ref name=pmid19946711>{{Cite journal | last1 = Dillon | first1 = MJ. | last2 = Eleftheriou | first2 = D. | last3 = Brogan | first3 = PA. | title = Medium-size-vessel vasculitis. | journal = Pediatr Nephrol | volume = 25 | issue = 9 | pages = 1641-52 | month = Sep | year = 2010 | doi = 10.1007/s00467-009-1336-1 | PMID = 19946711 |PMC = 2908435 | URL = http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2908435/}}</ref> | ||
#Inflammatory cells within the blood vessel wall. | #Inflammatory cells within the blood vessel wall. | ||
#Vessel injury: | #Vessel injury: | ||
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#***Amorphous = no definite form.<ref>URL: [http://dictionary.weather.net/dictionary/amorphous http://dictionary.weather.net/dictionary/amorphous]. Accessed on: 26 November 2010.</ref> | #***Amorphous = no definite form.<ref>URL: [http://dictionary.weather.net/dictionary/amorphous http://dictionary.weather.net/dictionary/amorphous]. Accessed on: 26 November 2010.</ref> | ||
#**"Nuclear dust" = punctate hyperchromatic material ~ 1 micrometre. | #**"Nuclear dust" = punctate hyperchromatic material ~ 1 micrometre. | ||
*+/-[[RBC extravasation]] - common. | |||
Notes: | Notes: |
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