Giant paravertebral schwannoma near the lumbar nerve roots with bone destruction: A case report

RATIONALE: Schwannomas grow slowly, originating from the Schwann cells of the nerve sheath. Schwannomas of cranial origin have the highest incidence, followed by intraspinal schwannomas. However, paravertebral schwannoma is rare, and to our knowledge, giant paravertebral schwannomas near the lumbar nerve roots with bone destruction are extremely rare. PATIENT CONCERNS: A 47-year-old Chinese woman complained of lower back soreness and a sensation of a bulging lumbar disc with no obvious cause for the past 3 years. DIAGNOSIS: Lumbar magnetic resonance imaging showed a large mass with uneven density, 17 × 12 × 15 cm in size, located to the right of the 4th lumbar with obvious bony destruction. Histopathology and immunohistochemistry confirmed that this mass was a benign schwannoma. INTERVENTIONS: Complete resection of the tumor (measuring about 17 × 12 × 15 cm in size) and vertebral reconstruction using internal fixation were performed. OUTCOMES: The patient was discharged without complications after surgery. The 3-year follow-up revealed that the patient recovered well with no evidence of recurrence. LESSONS: Here, we emphasize the importance of careful radiological examination and reflect on the difficulty of tumor resection. Furthermore, understanding the treatment and diagnosis of lumbar paravertebral schwannoma is critical for plastic surgeons and radiologists when encountering similar cases.