Presentation
Labral tear?
Patient Data
Age: 30 years
Gender: Male
From the case:
Black contrast effect - glenohumeral arthrogram
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Post arthrogram demonstrates intra-articular low signal on all sequences obscuring the labrum. High signal pericapsular fluid noted.
Partial thickness supraspinatus tear. Cyst within the humeral head.
Case Discussion
This is a case of "black contrast effect" that was provided to me for the purpose of education. The arthrogram was performed with 15 mL of a mixture of 0.2 mL Gadovist in 20 mL normal saline, giving a 1:100 dilution ratio instead of the recommended 1:200 dilution ratio. The patient had no side effects and underwent a repeat arthrogram a few weeks later.
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