Pseudotumor recurrence in a post-revision total hip arthroplasty with stem neck modularity: A case report

Figure 1 Pre-operative anterior-posterior pelvic radiograph showing degenerative changes of left hip with severe joint space narrowing, subchondral sclerosis, and cyst formation.

Figure 2 Initial post-operative anterior-posterior pelvic radiograph showing the components of the prosthesis well-aligned and well seated.

Figure 3 Pre-revision T2-weighted coronal magnetic resonance image showing a well-defined 7. 8 cm complex lesion anterior to the left hip prosthesis.

Figure 4 Post-revision anterior-posterior hip radiograph showing an aligned and well-fixed left hip prosthesis.

Figure 5 Post-revision short-T1 inversion recovery coronal magnetic resonance image demonstrating pseudotumor recurrence.