The reliability of computerized axial tomography in the diagnosis of infratentorial mass lesions. A neurosurgical appraisal.

The accuracy of CAT in the diagnosis of infratentorial expanding lesions is analysed on the basis of 224 personal cases. The posterior fossa lesions are classified in four groups according to the reliability of CAT as the only pre-operative examination. The present indications for conventional neuroadiological procedures are also outlined. Particular emphasis is laid on the information supplied by CAT in postoperative follow up to detect both immediate and delayed complications.