title: [Correlation of preoperative neuroradiologic with postoperative histologic diagnosis in pathological intracranial processes].
abstract: OBJECTIVE
  To determine the accuracy of preoperative neuroradiological diagnosis of pathological intracranial processes in a prospective study.
  
  
  METHODS
  A team of three neuroradiologists determined the diagnosis in CT, MR and angiography prior to stereotactic biopsy or operative resection (173 patients). Only one diagnosis was allowed, except in those cases with two equally probable diagnosis (24 patients). In 106 patients a resection of a brain tumor, in 67 cases a stereotactic biopsy was performed. According to the histological diagnosis the patients were subdivided into three groups: 1: complete agreement: the single diagnosis was correct. 2: conditional agreement: on of the 2 differential diagnosis was correct. 3: no agreement
  
  
  RESULTS
  In 131 cases (76%) a complete agreement, in 24 cases (14%) a conditional agreement and in 18 patients (10%) no agreement were found. Assuming only stereotactic procedures the neuroradiological diagnosis was correct in 44 cases (66%) and incorrect in 10 cases (15%). In 13 patients (19%) one of the two differential diagnosis was correct. The specificity of the major tumors was calculated between 92% and 100%. The sensitivity for pituitary adenomas (n = 9) and neurinomas (n = 11) was 100%, the sensitivity for meningiomas (n = 32) was 94%. A sensitivity was calculated between 50% and 71% for astrocytomas (WHO I to WHO IV, n = 64) and metastases (n = 24).
  
  
  CONCLUSIONS
  The accuracy was found to be higher than in the comparable retrospective studies.
authors.affiliation: Institut für Neuroradiologie, Universitätskliniken des Saarlandes, Homburg/Saar.
authors.forename: T
authors.initials: T
authors.lastname: Hagen
authors.forename: C
authors.initials: C
authors.lastname: Nieder
authors.forename: J R
authors.initials: JR
authors.lastname: Moringlane
authors.forename: W
authors.initials: W
authors.lastname: Feiden
authors.forename: J
authors.initials: J
authors.lastname: König
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001254:Astrocytoma / Q000175:diagnosis / Q000473:pathology / Q000601:surgery; D001706:Biopsy; D001921:Brain / Q000473:pathology; D001932:Brain Neoplasms / Q000175:diagnosis* / Q000473:pathology / Q000556:secondary / Q000601:surgery; D002648:Child; D002675:Child, Preschool; D003937:Diagnosis, Differential; D003952:Diagnostic Imaging; D005260:Female; D005909:Glioblastoma / Q000175:diagnosis / Q000473:pathology / Q000601:surgery; D006801:Humans; D007223:Infant; D008297:Male; D008875:Middle Aged; D011237:Predictive Value of Tests; D011446:Prospective Studies; D012680:Sensitivity and Specificity
vernacular_title: Zur Korrelation der präoperativen neuroradiologischen mit der postoperativen histologischen Diagnose bei pathologischen intrakraniellen Prozessen.