title: [Some examples of false negative diagnoses in computer tomography (author's transl)].
abstract: Four examples of false negative diagnoses in computer tomography are discussed. The patients were suffering from tumours in the sella turcica, beside the sella turcica and in the cerebellopontine angle. With reference to the two patients with a process beside the sella turcica, the differential diagnosis of these processes (of which the clinical syndrome is characterized by ophthalmoplegia) is discussed. The diagnostic reliability of computer tomography seems to be inferior for these perisellar processes than for other localizations. Angiography and pneumoencephalography are the methods of choice in the diagnosis of these processes.
mesh_terms: D000238:Adenoma, Chromophobe / Q000000981:diagnostic imaging; D000328:Adult; D002343:Carotid Artery, Internal / Q000000981:diagnostic imaging; D002528:Cerebellar Neoplasms / Q000000981:diagnostic imaging*; D002530:Cerebellopontine Angle; D002533:Cerebral Angiography; D002648:Child; D002675:Child, Preschool; D003951:Diagnostic Errors; D006801:Humans; D008297:Male; D008527:Medulloblastoma / Q000000981:diagnostic imaging; D008875:Middle Aged; D009442:Neurilemmoma / Q000000981:diagnostic imaging; D010524:Peripheral Nervous System Neoplasms / Q000000981:diagnostic imaging; D010911:Pituitary Neoplasms / Q000000981:diagnostic imaging*; D011011:Pneumoencephalography; D012658:Sella Turcica; D014057:Tomography, X-Ray Computed; D000159:Vestibulocochlear Nerve
vernacular_title: Einige Beispiele falsch-negativer Diagnosen bei der Computer-Tomographie