Benign chest wall lipoblastoma: report of a case.

This report deals with a 22-month-old boy who had a benign lipoblastoma on the chest wall. The tumor was located intrathoracically and was well-encapsulated. It was yellowish in color with a shiny cut surface and consisted of multiple lobules. Histologically, peripheral immature lipoblasts with fat vacuoles of various size and central mature fat cells containing a single, large fat vacuole are characteristic of this tumor. No local recurrence has been found during the 17 months since total excision.