coffin lid crystals

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coffin lid crystals2016-11-28T15:58:59+00:00

coffin lid crystals

coffin lid image from New Medical Terms



Definition A descriptive term for 3-6-sided colourless prism-shaped crystals seen in various biological fluids which have been fancifully likened to the lids on coffins.

• Urine Ammonium magnesium phosphate–triple phosphate (struvite) crystals, are typically seen in neutral or

coffin lid crystals image from New Medical Terms

coffin lid crystals (struvite) in urine

alkaline urine, and linked to urinary tract infections of urea-splitting bacteria (image to the left).

• Synovial fluid Coffin lid crystals may be seen in a background of , hyperparathyroidism, haemochromatosis, hypomagnesaemia, hypophosphatasia, myxedema, ochronosis, and Wilson’s disease
Differential diagnosis
Other conditions affecting joints–e.g., gout, osteoarthritis, rheumatoid arthritis, chondrocalcinosis

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