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Scand J Clin Lab Invest. 1982 May;42(3):231-4.

Urinary calcium oxalate monohydrate crystals in ethylene glycol poisoning.

Abstract

Four patients admitted for ethylene glycol intoxication had massive crystalluria, predominantly of needle-shaped calcium oxalate monohydrate--sometimes referred to as the 'hemp seed' habit. A few 'envelope' type crystals of calcium oxalate dihydrate were observed in one urine sample. Although not a pathognomonic sign, the presence of a large number of calcium oxalate monohydrate crystals (Whewellite) supports the diagnosis of ethylene glycol poisoning in patients having a metabolic acidosis of unknown aetiology. We conclude that the monohydrate form rather than the dihydrate form is the predominant type of calcium oxalate crystal formed in ethylene glycol poisoning.

PMID:
7134806
[PubMed - indexed for MEDLINE]
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