2007 Volume 69 Issue 3 Pages 263-265
A 55-year-old male presented with an atypical lipomatous tumor. Thirteen years previously, he had been diagnosed as having myositis ossificans traumatica of his right upper back. Ten years after this diagnosis, a tumor arose at this site and was excised. Then a year and 7 months later, the tumor recurred at the same site. Histopathological examination revealed a circumscribed tumor, which was composed of multinucleated cells, bizarre stromal cells, lipoblasts in the fibrilliform collagenous stroma of mature fat cells and fibrosis. The tumor was clinically and histopathologically diagnosed to be an atypical lipomatous tumor.
