[Chronic ethmoid and sphenoid sinusitis as an incidental finding in computerized tomography of the skull].

From 373 patients examined by cranial CT 60 had as accidental findings chronic ethmoidal and/or sphenoidal sinusitis. From 234 patients with pathologic brain CT findings 33 had chronic sinusitis (14%). By comparison 27 from 139 patients without pathologic brain CT had findings like sinusitis (19.4%). We suppose that often chronic sinusitis ethmoidalis and/or sphenoidalis suspense signs lead to cranial CT, although sinusitis was the only pathologic cause.