Surgical neurology international · 2022
Posterior fossa melanocytic schwannoma extending to the cervicothoracic spinal cord: A clinical rarity.
Клинический случайСтатьяНазвание и аннотация: Перевод пока не подготовлен
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Fazal Zoha Zahid, Kazmi Syeda Maryam, Bajwa Mohammad Hamza, Khan Ahsan Ali
Аннотация
BACKGROUND: Melanocytic schwannomas (MSs) are rare, malignant peripheral nerve sheath tumors with only 200 cases reported to date. These pose imaging and pathological challenges for definitive diagnosis.
CASE DESCRIPTION: A 25-year-old lady presented at our center with a prolonged history of gait disturbance, left ear tinnitus, headaches, and drowsiness. MRI findings showed a midline cystic lesion in the posterior cranial fossa extending caudally to the D1 vertebral body, with marked central hypointensity, and peripheral hyperintensity on T1-weighted images. A suboccipital craniotomy and debulking of the lesion were performed, showing a hyperpigmented, infiltrative tumor adherent to the surrounding structures. This was confirmed as a melanocytic schwannoma on histopathological analysis.
CONCLUSION: Posterior fossa MSs involving cervicomedullary region and extending distally to cervicothoracic spinal cord are rare and complex cases, particularly with regard to difficulty diagnosing preoperatively and surgical resection.
CASE DESCRIPTION: A 25-year-old lady presented at our center with a prolonged history of gait disturbance, left ear tinnitus, headaches, and drowsiness. MRI findings showed a midline cystic lesion in the posterior cranial fossa extending caudally to the D1 vertebral body, with marked central hypointensity, and peripheral hyperintensity on T1-weighted images. A suboccipital craniotomy and debulking of the lesion were performed, showing a hyperpigmented, infiltrative tumor adherent to the surrounding structures. This was confirmed as a melanocytic schwannoma on histopathological analysis.
CONCLUSION: Posterior fossa MSs involving cervicomedullary region and extending distally to cervicothoracic spinal cord are rare and complex cases, particularly with regard to difficulty diagnosing preoperatively and surgical resection.