Infantile digital fibromatosis.

Infantile digital fibromas are rare benign neoplasms that occur principally in children and are usually confined to the digits. These lesions are similar in appearance to several benign and malignant lesions, and biopsy is often required to confirm the diagnosis. The tumor is composed of myofibroblasts, which contain pathognomonic intracellular inclusion bodies. There is a strong tendency for recurrence after excision. We present a 2-year-old who developed extensive involvement of all 4 extremities after syndactyly release. This case is unusual in that the lesions occurred postsurgically and were substantially more extensive than those previously described.