History

A 44-year-old man with a right index finger mass that has been present for a few years, but is now enlarging with pain (Figs. 1–4).

Fig. 1
figure 1

Axial T1- and fat-saturated FSE T2-weighted images

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Fig. 2
figure 2

Axial fat-saturated T1-weighted images before and after intravenous gadolinium administration

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Fig. 3
figure 3

Sagittal fat-saturated T1-weighted image after intravenous gadolinium administration

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Fig. 4
figure 4

Low power (×25, H and E) and higher power (×200, H and E) histological images

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