Birefringent crystal in urine is seen with
Correct Answer: Calcium oxalate stones
Description: There are two types of calcium oxalate crystals, the dihydrate (or Wedellite) and the monohydrate (orWhewellite), which are frequently found together inthe same sample. The former have mostly a typical bipyramidal shape, while the latter are more pleiomor- phichic , although the ovoid shape is the most frequent. Bipyramidal crystals are birefringent only when large or in aggregates, but even then birefringence is usually not intense. The monohydrates, however,are always strongly birefringent (Table 1). Calcium oxalate may be found in normal subjects, often as a consequence of ingestion of foods like chocolate, beet-root, peanuts, rhubarb, spinach, etc. , in stone formers, in patients with hyperoxaluria, or after ethylene glycol poisoning (see 'Crystalluria and acute renal failure'). Refer robbins 9/e p951
Category:
Pathology
Get More
Subject Mock Tests
Practice with over 200,000 questions from various medical subjects and improve your knowledge.
Attempt a mock test nowMock Exam
Take an exam with 100 random questions selected from all subjects to test your knowledge.
Coming SoonGet More
Subject Mock Tests
Try practicing mock tests with over 200,000 questions from various medical subjects.
Attempt a mock test now