Lipoblastomatosis--a case report.

Lipoblastoma and lipoblastomatosis are benign fatty tumors of soft tissues that are unique to childhood. A male infant aged 5 months presented with a history of recurrent lump in the left scapular region. He had been operated upon for the same lump 2 months earlier. A review of the histology of the two consecutive lumps showed an adipocytic tumor. Microscopically the tumor was composed of lobules of immature adipose tissue separated by thick fibrous septae. Plentiful lipoblasts were noted in various stages of differentiation and myxoid material was also present. A diagnosis of lipoblastomatosis was made. The second excision had a higher proportion of mature adipose tissue.