Craniovertebral junction melanocytoma: a case report.

Area of Science:

• Neuro-oncology
• Neurosurgery
• Pathology

Background:

• Melanocytomas are uncommon melanocytic tumors affecting the central nervous system.
• Tumors at the foramen magnum present unique surgical challenges due to the complex anatomy.

Observation:

• A 55-year-old male presented with a year of progressive quadriparesis.
• Imaging revealed a lobulated intradural extramedullary mass at the craniovertebral junction, extending into the C2-3 neural foramina.

Findings:

• The patient underwent a foramen magnum approach with near-total tumor excision.
• Histopathology and immunohistochemistry confirmed the diagnosis of melanocytoma.
• At ten months post-surgery, the patient showed substantial motor recovery.

Implications:

• This case underscores the importance of considering melanocytoma in the differential diagnosis of craniovertebral junction masses.
• Successful surgical management can lead to significant neurological recovery in patients with foramen magnum melanocytomas.
• Further research into the optimal surgical strategies for these rare tumors is warranted.