Lipoblastoma of the neck: a case report and literature review.

Lipoblastoma is a rare benign tumor arising from embryonic white fat. We describe a case of huge lipoblastoma of the neck in a 1-year-old boy. Magnetic resonance imaging (MRI) revealed a 7 x 7 cm neck mass that extruded into the parapharyngeal and paratracheal spaces. At the operation, a well-circumscribed and extensively growing tumor was completely removed. Histopathologic examination showed that the tumor contained lobulated mature adipose tissue and myxoid tissue with lipoblasts and other immature fat cells. The postoperative course was uneventful, and no recurrence of tumor has been noted in more than 2 years follow-up.