Abstract:
OBJECTIVE AND IMPORTANCE:Intracranial germinomas often disseminate via the ventricular and subarachnoid pathways, but seeding to the perioptic arachnoid space is extremely unusual. We report two cases of recurrent germinoma seeding in the optic nerve. CLINICAL PRESENTATION:Two men with pure germinoma were initially treated with three cycles of a three-drug regimen of bleomycin, etoposide, and cisplatin, and a complete response was achieved. Patient 1 experienced ventricle wall dissemination 10 months after undergoing the initial treatment and was successfully treated with three cycles of carboplatin and etoposide and then by 24-Gy whole-ventricle radiation. Twelve months later, he complained of progressive visual acuity loss, and magnetic resonance imaging demonstrated bilateral enhancement of the optic nerves. Patient 2 also experienced ventricle wall dissemination 3 months after undergoing the initial chemotherapy, but he exhibited a complete response after undergoing 24-Gy whole-ventricle radiation. Two years later, he complained of progressive visual acuity loss. Magnetic resonance imaging demonstrated bilateral enhancement of the optic nerves and cerebellar hemispheres. INTERVENTION:None of the locations of recurrence were included in the irradiation field, whereas there was no recurrence within the radiation field. Complete responses were obtained with three cycles of a three-drug regimen of ifosfamide, cisplatin, and etoposide and then by 24-Gy whole-brain radiation that included the bilateral optic nerves. The visual acuity of each patient improved slightly. CONCLUSION:Delayed seeding in the optic nerve may result from germinoma cells that remain dormant, so they cannot be destroyed by chemotherapy regimens alone.
journal_name
Neurosurgeryjournal_title
Neurosurgeryauthors
Nakajima T,Kumabe T,Jokura H,Yoshimoto Tdoi
10.1097/00006123-200101000-00041keywords:
subject
Has Abstractpub_date
2001-01-01 00:00:00pages
214-7; discussion 217-8issue
1eissn
0148-396Xissn
1524-4040journal_volume
48pub_type
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