McClure J, Bauze R J, Iyer P, Mukherjee T
Postgrad Med J. 1982 Nov;58(685):716-9. doi: 10.1136/pgmj.58.685.716.
A lesion of pigmented synovitis appeared as a nodule in the scar one year after arthrotomy and was removed one year later. It was clearly distinguished from a concurrent myxoid liposarcoma on clinical and morphological grounds (light and electron microscopy).