Sudden deafness due to intralabyrinthine haemorrhage: a possible rare late complication of head and neck irradiation
Annals of the Academy of Medicine, Singapore
;
: 78-82, 2007.
Article
in English
| WPRIM
| ID: wpr-275228
ABSTRACT
<p><b>INTRODUCTION</b>Radiation injury resulting in sudden, late onset sensorineural hearing loss is a recognised complication in patients who have received head and neck irradiation. We describe the magnetic resonance imaging (MRI) of the internal acoustic canal (IAC) of 3 such patients and postulate a cause for these findings.</p><p><b>CLINICAL PICTURE</b>A total of 63 patients were referred for MRI IAC for sudden-onset sensorineural hearing loss. Of these patients, only 5 patients had abnormal MRI finding in the affected ear and the remaining patients had normal studies. Two patients had acoustic neuromas. Three patients demonstrated high T1-weighted signal in the labyrinths of the affected ears and had past histories of head and neck irradiation. The MRI findings and medical records of these 3 patients were reviewed and described in this case series.</p><p><b>OUTCOME</b>High labyrinthine signal on unenhanced T1-weighted images in the symptomatic ear of these patients was observed, suggesting the possibility of haemorrhage. In the patient who had a history of brain tumour, susceptibility artifacts were also seen in the right hemipons on the gradient-echo images, indicating the presence of paramagnetic substances from previous therapy.</p><p><b>CONCLUSION</b>We postulate that labyrinthine haemorrhage is a rare, late complication of head and neck irradiation, resulting in sudden sensorineural hearing loss.</p>
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Radiotherapy
/
Radiotherapy Dosage
/
Time Factors
/
Magnetic Resonance Imaging
/
Hearing Loss, Sudden
/
Head and Neck Neoplasms
/
Hearing Loss, Sensorineural
/
Hemorrhage
/
Labyrinth Diseases
Limits:
Female
/
Humans
/
Male
Language:
English
Journal:
Annals of the Academy of Medicine, Singapore
Year:
2007
Type:
Article
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