Interpretation of positive urine stick tests for blood in ankylosing spondylitis.
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Biomedical subjects
Publications and source records attributed to P Jobanputra.
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A 56 year old man with ankylosing spondylitis and discovertebral destruction presented with signs of spinal cord compression that was the result of the soft tissue reaction occurring at the level of the discovertebral destruction. This case emphasises the importance of early recognition, use of appropriate imaging techniques (computed tomographic myelography or magnetic resonance), and operative intervention in the management of this rare complication of ankylosing spondylitis.
A patient with septic arthritis of the wrists was noted to have concurrent calcium pyrophosphate crystals in synovial fluid aspirated from both joints. These were present in unusually large numbers and were associated with destructive changes of the joints. It seemed likely that the complete dissolution of calcified cartilage accounted for the liberation of such numerous crystals. Previous reports of pseudogout associated with septic arthritis have noted the presence of abundant calcium pyrophosphate crystals in synovial fluid. It is suggested that this feature should always raise the possibility of concurrent sepsis.