A Rare Primary Dumbbell Lipoblastoma.

Area of Science:

• Pediatric Oncology
• Surgical Pathology
• Developmental Biology

Background:

• Lipomas and lipoblastomas are benign mesenchymal tumors, distinct from malignant liposarcomas.
• Lipoblastoma, a rare tumor, originates from embryonal fat cells and can present atypically.
• Spinal tumors in infants require careful diagnostic evaluation due to potential for rapid growth and neurological compromise.

Observation:

• A 9-month-old male presented with a painless, rapidly growing dorsal mass with paravertebral and intraspinal extension from D3 to D10.
• Imaging revealed a well-defined, enhancing mass communicating via the D7 neural foramen.
• Intraoperative findings suggested a dumbbell-shaped neurofibroma, adherent to a dorsal nerve root.

Findings:

• Histopathological analysis confirmed the lesion as a lipoblastoma, despite initial intraoperative appearance.
• Surgical excision involved a single-level laminectomy and sacrifice of the affected dorsal nerve root.
• The patient experienced an uneventful postoperative recovery.

Implications:

• This case underscores the importance of considering rare pediatric tumors like lipoblastoma in the differential diagnosis of spinal masses.
• Accurate histopathological diagnosis is crucial for appropriate management of mesenchymal tumors.
• Successful surgical management of intraspinal lipoblastoma, even with nerve root sacrifice, can lead to favorable outcomes.