MRI has also been recently utilized in both diagnosing and monitoring effusions following surgical intervention with greater accuracy than both plain radiographs and POCUS [19,20]. Laboratory serum blood investigations include infection and inflammatory markers, more specifically the three most utilized markers are white cell count (WCC), C-reactive protein (CRP), and Erythrocyte sedimentation rate (ESR) [21,22]. Here, CRP is linked to infection.