Benign lipoblastoma: first case report of a mesenteric origin.

A case of benign lipoblastoma of the mesentery, surgically resected in a 4-year-old boy, is reported, with data on its gross and histologic features. Both diffuse lipoblastomatosis and single benign lipoblastoma have been observed in different anatomical sites, mostly involving the subcutaneous tissue, and only sporadic cases of mediastinal or retroperitoneal lipoblastomas have been reported. The present case therefore appears to be the first description of a lipoblastoma arising from mesentery. The main tumoral lesions with which lipoblastoma can be confused are briefly discussed.