Computerized tomography findings in posterior fossa lesions.

In 190 of 7000 brain CT studies performed between April 1978 and September 1984, abnormalities of the posterior fossa were found. Of these, 51.5% were primary tumors, 15.3% metastases, 12.1% vascular lesions and 5.8% congenital or developmental lesions. Frequencies, age and sex distribution and radiologic characteristics of the various posterior fossa pathologies are reviewed and discussed.