Cortical auditory disorder caused by bilateral strategic cerebral bleedings. Analysis of two cases.
The authors present the anatomical and clinical features of cortical auditory dysfunction in two patients, in whom hypertensive bleedings destroyed the cortical auditory centres in both hemispheres. The second haemorrhage occurred four years after the first bleeding in both cases. The bleedings isolated the cortical hearing centres due to the destruction of the right and left temporal white matter. During the clinical course the symptomatology has changed in both patients: pure word deafness has transformed to cortical deafness and generalised auditory agnosia. Normal pattern of brain stem auditory evoked potentials suggested intact auditory pathways. Authors conclude that transformation of clinical forms of cortical auditory disorder can be explained by the tissue reaction to the subcortical bleeding in the cortical auditory centres.
Department of Neurology, Faculty of Medicine, Semmelweis University, Balassa u.6., Budapest H-1083, Hungary. szirmai@neur.sote.hu
Imre
I
Szirmai
Marianna
M
Farsang
Maria
M
Csüri
D001303:Auditory Cortex / Q000000981:diagnostic imaging* / Q000473:pathology* / Q000503:physiopathology; D005625:Frontal Lobe / Q000000981:diagnostic imaging / Q000473:pathology; D007839:Functional Laterality / Q000502:physiology*; D006313:Hearing Loss, Central / Q000175:diagnosis / Q000209:etiology* / Q000503:physiopathology; D006801:Humans; D020299:Intracranial Hemorrhage, Hypertensive / Q000150:complications* / Q000175:diagnosis*; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D012720:Severity of Illness Index; D013067:Speech Perception / Q000502:physiology; D013702:Temporal Lobe / Q000000981:diagnostic imaging* / Q000473:pathology*; D014057:Tomography, X-Ray Computed