Resident Report 4/11 – Ca oxalates

Teaching Points:

  • Calcium oxalate crystals
    • Seen in patients with ethylene glycol toxicity, leading to renal failure
    • Urine microscopy notable for envelope-shaped or dumb bell shaped crystals
  • Uric Acid crystals
    • Seen in high uric acid excretion states (tumor lysis syndrome)
    • Urine microscopy notable for rhomboid shaped crystals
  • Struvite crystals
    • Seen in urine infections with bacteria that produce basic pH
    • Examples include ureaplasma urealyticum infections
    • Formation of magnesium ammonium phosphate crystals
    • Urine microscopy notable for coffin-shaped crystals
  • Cystine crystals
    • Seen in patients with cysteinuria
    • Urine microscopy notable for hexagon-shaped crystals

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google+ photo

You are commenting using your Google+ account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s