Increased Intracranial Pressure following Compression of the Superior Sagittal Sinus

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Abstract
A case is presented in which evidence of increased intracranial pressure developed slowly following compression of the superior longitudinal sinus in the posterior parietal area by a depressed bone fragment. Dural sinus pressure recordings and venograms before and after elevation of the fragment were performed by Ray''s method. The evidence" f increased intracranial pressure resolved following removal of the compression. The patient was a 57-yr.-old man who was struck on the top of his head by a revolving airplane propeller. He sustained a depressed fracture of the skull over the longitudinal sinus in the posterior parietal region. Symptoms and signs of increased intracranial pressure developed slowly. The bone fragment compressing the sinus was removed and the symptoms and signs disappeared. It is believed this case gives supporting evidence to the concept that symptoms of increased intracranial pressure observed in patients with "otitic hydrocephalus" and "pseudo-tumor cerebri" may be due to obstruction of the major sinus by thrombosis.