QuestionSBA
QuestionChoice
This is not an observation in pseudogout. The crystals are usually rhomboid-shaped, not circular.
10003135
e
Positively birefringent circular crystals
QuestionChoice
These are the typical crystals of calcium pyrophosphate observed under polarised light microscopy in pseudogout.
10003131
a
Positively birefringent rhomboid crystals
QuestionChoice
This is not an observation in pseudogout. The crystals are positively birefringent, not negatively.
10003133
c
Negatively birefringent rhomboid crystals
QuestionChoice
This is an observation in gout.
10003134
d
Negatively birefringent needle-shaped crystals
QuestionChoice
This is not an observation in pseudogout. The crystals are rhomboid-shaped, not needle shaped.
10003132
b
Positively birefringent needle-shaped crystals
Concept
Chapter
2693
3905
pseudogout
Topic
146
Rheumatology
13173
A 77-year-old male comes in with recurrent episodes of hot, swollen, stiff, painful knee. He is diagnosed with pseudogout on analysing the joint aspirate under a polarised light microscope.

What were the most likely findings of his joint aspirate?
a