Crystal Arthropathies — MCQs

All are true about gout except:

In a patient with gouty arthritis, strongly birefringent needle-shaped crystals with negative elongation in synovial fluid aspiration are composed of:

In a patient with gouty arthritis, synovial fluid aspiration will show:

A skin biopsy shows 'snowstorm' appearance on polarized microscopy. Which histological finding would best confirm gouty tophi?

Which of the following is the best investigation for acute gout?

Diagnosis of Gout is confirmed by which test?

A 65-year-old woman with type 2 diabetes is on hemodialysis for chronic kidney disease. She now presents to the clinic with symptoms of pain in the hands. The symptoms started many months age and are now getting worse. She does not recall any injury to the hands and has not noticed any swelling or redness in the joints.On examination, the joints are normal with no inflammation or tenderness on palpation. There is full range of motion of the fingers and wrists.Lab investigations: calcium (7.2 mg/dL), phosphate (5.5 mg/dL), and PTH level (710 ng/L). (See Figure below) What is the most likely diagnosis?

In a patient with gouty arthritis, synovial fluid aspiration will show which of the following:

A 58-year-old man with a diagnosis of chronic myeloid leukemia is treated with intensive chemotherapy. He goes into remission but develops pain in the left wrist. On physical examination, there is swelling and warmth on the palpation of the wrist. Polarized light microscopy of fluid aspirated from the wrist joint shows needle-shaped crystals that display negative birefringence. Which of the following processes most likely played an important role in the pathogenesis of the patient's wrist pain?

45-year-old man presented to outpatient department with hot, swollen left big toe and a painful lesion on the rim of his left pinna. Polarized light microscopy of the synovial fluid shows dense neutrophilic infiltrate and crystals that are negatively birefringent. Patient is likely to be suffering from?