Fig. 25

Brodie’s abscess and lymph nodes in a patient with ACL reconstruction. (a) Axial and (b) sagittal fat saturated proton density weighted, (c) sagittal T1-weighted, (d) sagittal fat saturated contrast-enhanced T1-weighted and (e, f) sequential axial fat saturated contrast-enhanced T1-weighted images. A small cystic lesion (white arrow) at the anterior aspect of the tibia in contact with the ACL graft (black arrow) with marked peripheral enhancement (grey arrows) and a central non-enhancing portion is depicted. The abscess was draining via a sinus tract along the ACL graft to the anterior surface of the tibia. Three small cystic-like lesions (grey arrowheads) in the popliteal fossa, represent enlarged lymph nodes