A 1-year-old male patient with infantile digital fibromatosis was reported. The lesion had been noticed at dorsum of right 2nd toe since 1-month-old and it was excised at 4-month. Later reexcision was performed at 10-month. The lesion consisted of intra-dermal fibromatous proliferation with many eosinophilic round inclusions, 7-8μ in diameter in fibroblast. By electron microscopy, the intracytoplasmic inclusions had no limitting membrane and composed of aggregates of fine fibrilar substances without any virus-like particle.
