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Unusual cause of increased intracranial pressure from metastatic germ cell cancer.

Metastatic lesions within the brain parenchyma are usually responsible for the development of increased intracranial pressure in patients with metastatic cancer. The lesions can usually be easily documented by computerized axial tomography (CT) of the head. Other causes must be sought in patients with metastatic cancer who present with signs of increased intracranial pressure and whose CT scan of the head fails to reveal any parenchymal lesions. Cranial metastases obstructing venous outflow from the brain may present in this manner.