Presentation
Unspecified trauma.
Patient Data
Gender: Female
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Left knee radiographs: suprapatelar knee joint effusion. No fracture or bone lesion identified.
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Joint effusion delineated.
Case Discussion
Knee joint effusions are only reliably seen on lateral projections. A knee joint effusion appears as well-defined rounded homogeneous soft tissue density within the suprapatellar recess on a lateral radiograph.
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