Internal Medicine
Online ISSN : 1349-7235
Print ISSN : 0918-2918
ISSN-L : 0918-2918
CASE REPORTS
Medullary Hemorrhagic Infarction after Radiation for Nasopharyngeal Carcinoma
Jian-Ren Liu, Jian Huang, Min Zhang, Qi-Chun Wei, Ying Song, Jian-Zheng Huang, Mei-Ping Ding, Ping-Juan Jia
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Keywords: medullary hemorrhagic infarction, nasopharyngeal carcinoma, radiotherapy, radio-encephalopathy, magnetic resonance imaging, diffusion weighted imaging
JOURNAL OPEN ACCESS

2007 Volume 46 Issue 9 Pages 611-615

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Abstract

Head and neck irradiation may lead to accelerated atherosclerosis over several years. Delayed stroke has been described after head and neck irradiation administered for a number of conditions. However, brain stem stroke has only rarely been associated with irradiation. We report a patient with medullary hemorrhagic infarction 6 years after radiotherapy for nasopharyngeal carcinoma. A 42-year-old normotensive Chinese male had rapid onset of vertigo, diplopia, ataxia, dysphagia, hypophonic dysarthria, hemiparesis, and respiratory distress. Cranial MR imaging 2 days after symptom onset showed medullary infarction, and cranial MR imaging 5 days after symptom onset showed medullary hemorrhage. He needed ventilatory support and died of bacterial pneumonia 1 month later. Other risk factors for stroke were absent. Hemorrhagic infarction in this patient was likely associated with the radiotherapy. Radiotherapy is the first choice of treatment for nasopharyngeal carcinoma, however, it may induce fatal medullary hemorrhagic infarction.

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© 2007 by The Japanese Society of Internal Medicine
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