Primary germinoma of the posterior fossa with CSF and extracranial metastases.

We describe the case of a 1-year-old boy presenting clinically and radiologically with a haematoma occurring in the cerebellum. Histological examination revealed a germ cell tumour with a pure germinomatous component. The patient subsequently succumbed with extensive tumour metastases in the spinal cord and the subcutaneous tissues of the scalp. This represents the first comprehensive documented report of a germinoma arising in the posterior fossa.