• We encountered a patient with infantile digital fibromatosis. The representative lesion was a firm, indurated nodule, which developed in the scar of a previous injury on the skin of the left thigh of an 11-year-old girl. Electron microscopy revealed tumor cells that were strongly reminiscent of myofibroblasts. Histopathologically, the cytoplasmic inclusion bodies in the tumor cells stained posi tively or negatively with hematoxylin-eosin. Electron microscopically, they were either well-defined dense bodies that often showed a doughnutlike appearance or ill-demarcated dense bodies. Spotty calcified foci were seen in the central area of the tumor mass.
(Arch Dermatol 1986;122:915-918)
Miyamoto T, Mihara M, Hagari Y, Shimao S, Nakahara T, Kimura M. Posttraumatic Occurrence of Infantile Digital FibromatosisA Histologic and Electron Microscopic Study. Arch Dermatol. 1986;122(8):915-918. doi:10.1001/archderm.1986.01660200087022