Intra-Articular Synovial Sarcomas: Incidence and Differentiating Features from Localized Pigmented Villonodular Synovitis

Figure 2

17-year-old boy with a large sarcoma in Hoffa’s fat pad (case #S4). (a) Sagittal fat-saturated T2-weighted MR image shows the tumor growing extra-articularly and invading the patella. (b) Lateral radiograph shows intratumoral calcifications.

(a)

(b)