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Primary midbrain germinoma
Samir Kumar Kalra1, Vivek Kumar Vaid, Awadhesh Kumar Jaiswal
1Department of Neurosurgery, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Rae Bareli Road, Lucknow, 226014, Uttar Pradesh, India.
Insights
This case study describes an 11-year-old boy with a rare primary midbrain germinoma. Treatment involved surgery, chemotherapy, and radiotherapy, leading to neurological improvement.
Area of Science:
- Neuro-oncology
- Pediatric Neurology
- Neurosurgery
Background:
- Primary midbrain germinomas are exceptionally rare central nervous system tumors.
- This report details a unique case in an 11-year-old boy presenting with significant neurological deficits.
Purpose of the Study:
- To document an extremely rare case of primary midbrain germinoma.
- To highlight the clinical presentation, diagnostic challenges, and management of this rare tumor.
Main Methods:
- Clinical case presentation with detailed neurological examination findings.
- Diagnostic imaging including MRI to identify the midbrain mass and hydrocephalus.
- Surgical intervention: ventriculoperitoneal shunt and suboccipital craniectomy with tumor decompression.
- Histopathological diagnosis via biopsy confirming germinoma.
- Multimodal treatment including chemotherapy and radiotherapy.
Main Results:
- The patient presented with progressive holocranial headache, vomiting, visual blurring, ataxia, and sensory-deficits.
- Imaging revealed an enhancing midbrain mass with hydrocephalus.
- Surgical decompression and shunt placement led to initial neurological improvement.
- Histopathology confirmed a germinoma.
- Post-operative chemotherapy and radiotherapy were administered.
Conclusions:
- Primary midbrain germinoma is an exceedingly rare pediatric tumor with a challenging diagnosis and management.
- Multidisciplinary treatment including surgery, chemotherapy, and radiotherapy is crucial for improving outcomes.
- Further research and case reporting are vital for understanding this rare entity.
Abstract:
An 11-year-old boy presented with a 4-month history of progressive holocranial headache, intermittent vomiting and visual blurring. Later, he began walking unsteadily, with progressive bilateral visual and hearing loss. He had had two episodes of abnormal tonic posturing the day prior to admission. On examination, the patient was drowsy and did not respond to commands. Imaging showed an enhancing midbrain mass with an exophytic component with hydrocephalus. Emergency ventriculoperitoneal shunt was performed, following which there was neurological improvement. Later he underwent a midline suboccipital craniectomy with vermian splitting and decompression of the exophytic component of the tumor from the midbrain. Biopsy of the tumor revealed a germinoma. Post-operatively, the patient received chemotherapy followed by radiotherapy. Primary midbrain germinoma is an extremely rare entity and to the best of our knowledge only two cases to date have been reported in the literature.
