“…Histologically, distinguishing the bony lesion from its soft tissue counterpart is not possible without knowing the origin of the lesion [2,3,11]. This difficulty is expressed in terms such as "aggressive fibromatosis," "differentiated fibrosarcoma," "infantile fibrosarcoma," and "fibrosarcoma-like fibromatosis" being used for all fibroblastic tumors of infancy showing prominent great cellularity and prominent mitotic activity [1,4,6,8,12,25]. Case reports on the solitary infantile desmoid type of fibromatosis of bone are even more rare [5,22].…”