title: Fibrous histiocytoma simulating congenital fibromatosis: a light-, electron microscopic and tissue culture study.
abstract: The unusual occurrence of a fibrous histiocytoma of subcutaneous soft tissues, bones, and viscera is described in a newborn infant. The clinical and radiologic picture simulated a congenital fibromatosis, but histologic, electronmicroscopic and tissue culture studies indicated a malignant tumor with a bimodal cell population resembling immature fibroblasts and histiocytes. Although less mature and more uniform, it essentially parallels the findings in the adult malignant fibrous histiocytomas.
mesh_terms: D002478:Cells, Cultured; D003937:Diagnosis, Differential; D005347:Fibroblasts; D005350:Fibroma / Q000151:congenital / Q000175:diagnosis*; D006644:Histiocytes; D018219:Histiocytoma, Benign Fibrous / Q000175:diagnosis* / Q000473:pathology; D006801:Humans; D007231:Infant, Newborn; D008854:Microscopy, Electron