Rapidly growing posterior neck lipoblastoma in 2-year-old boy

概要

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A lipoblastoma is a benign tumor composed of embryonic adipose tissue that usually occurs before the age of three. We had a case with a rapidly growing lipoblastoma in a 2-year-old boy. The patient's mother noticed a mass in his posterior neck. We found a 35-mm hard mass in his posterior neck, and because we could not find any evidence of malignancy by FNA, we diagnosed it as a lipoma. One year later, the mass size was 65 mm. MRI showed a 68×52×36 mm mass with clear edges. The growth was so quick that we couldn't rule out malignant tumor. We performed an operation under general anesthesia on Dec. 8, 2009. The tumor was located right under the back muscles of neck, and the color was white. It had no adhesions so we removed it completely. The pathological diagnosis identified a lipoblastoma. Surgical resection is appropriate treatment for lipoblastoma. There have been reports of local relapse of lipoma, so follow-up is required.
Japan Society for Pediatric Otorhinolaryngologyの論文