Difference between revisions of "Crystals in body fluids"
Jump to navigation
Jump to search
m (→Urine crystals: more) |
(+gout) |
||
| Line 1: | Line 1: | ||
This article deals with '''crystals in body fluids'''. | This article deals with '''crystals in body fluids'''. | ||
=Crystals= | |||
==Joint crystals== | ==Joint crystals== | ||
Types:<ref>TN05 RH6</ref> | Types:<ref>TN05 RH6</ref> | ||
| Line 28: | Line 29: | ||
*Calcium oxalate crystals are seen in the context of [[ethylene glycol]] poisoning.<ref name=Ref_KFP589>{{Ref KFP|589}}</ref> | *Calcium oxalate crystals are seen in the context of [[ethylene glycol]] poisoning.<ref name=Ref_KFP589>{{Ref KFP|589}}</ref> | ||
==See also | =Diseases= | ||
==Gout== | |||
===General=== | |||
*Classically big toe. | |||
===Microscopic=== | |||
Features:<ref>URL: [http://pathologyoutlines.com/joints.html#gout http://pathologyoutlines.com/joints.html#gout]. Accessed on: 5 August 2011.</ref> | |||
*Tophi (advanced) | |||
**Aggregates of urate crystals. | |||
**Reactive granulomatous inflammation. | |||
**Fibrotic synovium. | |||
Images: | |||
*[http://www.archivesofpathology.org/na101/home/literatum/publisher/pinnacle/journals/content/arpa/2002/15432165-126.5/0003-9985%282002%29126%3C0621%3Apqcast%3E2.0.co%3B2/production/images/large/i1543-2165-126-5-621-f01.jpeg Gouty tophus - A xray, B Diff-Quick, C Pap smear, D polarized light, E H&E (archivesofpathology.org)]. | |||
=See also= | |||
*[[Cytopathology]]. | *[[Cytopathology]]. | ||
*[[Medical renal diseases]]. | *[[Medical renal diseases]]. | ||
=References= | |||
{{reflist|1}} | {{reflist|1}} | ||
[[Category:Clinical]] | [[Category:Clinical]] | ||
Revision as of 18:44, 5 August 2011
This article deals with crystals in body fluids.
Crystals
Joint crystals
Types:[1]
- Gout = needle-shaped, negatively birefringent, yellow when aligned.
- Pseudogout = rhomboid-shaped, positively birefringent, blue when aligned.
Notes:
- Pseudogout also known as CPPD = calcium pyrophosphate dehydrogenase.
- Memory device: ABC+ = aligned blue is calcium & cuboid - positively birefringent.
Images:
- Crystals - schematic (stpetes.org) from Microscopic Examination for Crystals in Synovial Fluid (stpetes.org).
- Blue rhomboid CPPD crystals (med.utah.edu).
.jpg){kind=link}
Urine crystals
Types - morphology:
- Envelope shape (calcium oxalate).
- Diamond shape (uric acid).
- Coffin-lid shape (struvite).
- Hexagonal shape (cysteine).
Notes:
- Memory devices:
- Diamonds are see-through; ergo, uric acid stones not seen on KUB.
- Calcium oxalate = envelope, uric acid = diamond.
- Uric acid crystals: usually dissolve in formalin... but do not dissolve in alcohol.[2]
- Calcium oxalate crystals are seen in the context of ethylene glycol poisoning.[3]
Diseases
Gout
General
- Classically big toe.
Microscopic
Features:[4]
- Tophi (advanced)
- Aggregates of urate crystals.
- Reactive granulomatous inflammation.
- Fibrotic synovium.
Images:
- Gouty tophus - A xray, B Diff-Quick, C Pap smear, D polarized light, E H&E (archivesofpathology.org).
See also
References
- ↑ TN05 RH6
- ↑ WG. 8 January 2010.
- ↑ Saukko, Pekka; Knight, Bernard (2004). Knight's Forensic Pathology (3rd ed.). A Hodder Arnold Publication. pp. 589. ISBN 978-0340760444.
- ↑ URL: http://pathologyoutlines.com/joints.html#gout. Accessed on: 5 August 2011.