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[Pineocytomas; clinicopathological evaluation of 4 cases]
1Department of Neurosurgery, Hiroshima University School of Medicine.
No Shinkei Geka. Neurological Surgery
|April 1, 1992
Summary
This study evaluated four pineocytoma patients, finding no dorsal midbrain dysfunction. Complete tumor removal and radiation therapy showed promising results, though further research is needed due to the tumor's low incidence.
Area of Science:
- Neuropathology
- Neurosurgery
- Oncology
Background:
- Pineocytoma is a rare pineal gland tumor.
- Understanding its clinicopathological features is crucial for effective treatment.
Observation:
- Four patients (2 male, 2 female, ages 17-40) with pineocytoma were evaluated.
- Patients presented with increased intracranial pressure but lacked specific dorsal midbrain dysfunction signs.
- Diagnostic imaging revealed heterogeneous (calcifications, cysts) or homogeneous tumor appearances.
Findings:
- Histology showed pineal-sand-like calcifications in some cases.
- Median sagittal MRI demonstrated expansive tumor growth.
- Total tumor removal was achieved in 2 patients; radiation therapy led to complete remission in 3, with variable radiosensitivity.
- No tumor recurrence was observed during follow-up (12-42 months).
Implications:
- Pineocytoma management requires a multidisciplinary approach.
- Despite challenges, surgical resection and adjuvant radiotherapy can be effective.
- The low incidence necessitates collaborative multi-institutional studies for comprehensive evaluation.