Tg. Sanders et al., RHEUMATOID NODULE OF THE FOOT - MRI APPEARANCES MIMICKING AN INDETERMINATE SOFT-TISSUE MASS, Skeletal radiology, 27(8), 1998, pp. 457-460
Subcutaneous rheumatoid nodules occur commonly in advanced cases of rh
eumatoid arthritis, but only rarely appear in the feet. We present a c
ase of a subcutaneous rheumatoid nodule arising in the heel pad of a 6
8-year-old man with a long history of rheumatoid arthritis, along with
a review of the literature. The appearance of the mass on MRI is illu
strated and correlated with the histologic findings. The MRI appearanc
e of a subcutaneous rheumatoid nodule is that of a nonspecific ill-def
ined mass with long T1- and long T2-relaxation times. A differential d
iagnosis for similar appearing masses is offered.