Radiologic Mimics of Osteomyelitis and Septic Arthritis: A Pictorial Essay

Figure 20

Primary amyloidosis. A 64-year-old woman with known primary amyloidosis of lacrimal glands, initially presenting with neck pain. Sagittal T2 (a), T1 (b), and axial T2FS (c) spine shows an infiltrative process involving the C7 and T1 vertebrae with an extraosseous extension of soft tissue into the epidural and prevertebral spaces (arrow). End plate irregularity is also present. Axial T2FS (c) at the level of C7 demonstrating epidural and prevertebral soft tissue infiltration (arrow). This case was difficult to distinguish from infection, ultimately requiring a biopsy for the final diagnosis of C7/T1 amyloid deposition. Axial T2 head at the level of the orbits (d) showed bilateral lacrimal gland enlargement secondary to amyloid deposition (arrow).

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