Difference between revisions of "Crystals in body fluids"

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Notes:
Notes:
*Memory device: ''Diamonds'' are see-through; ergo, uric acid stones not seen on KUB.
*Memory devices:  
**''Diamonds'' are see-through; ergo, uric acid stones not seen on KUB.
**Calcium oxalat'''e''' = '''e'''nvelope, uric aci'''d''' = '''d'''iamond.
*Uric acid crystals: usually dissolve in formulin... but do not dissolve in alcohol.<ref>WG. 8 January 2010.</ref>
*Uric acid crystals: usually dissolve in formulin... but do not dissolve in alcohol.<ref>WG. 8 January 2010.</ref>



Revision as of 04:53, 14 October 2010

This article deals with crystals in body fluids.

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:

Urine crystals

Types:

  • 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 formulin... but do not dissolve in alcohol.[2]

See also

References

  1. TN05 RH6
  2. WG. 8 January 2010.