Chronic Encapsulated Intracerebral Hematoma after Carbon Ion Therapy for Chordoma Mimicking Malignant Glioma: A Case Report
Abstract
Chronic encapsulated intracerebral hematoma is a rare type of intracerebral hemorrhage. Reportedly, it is associated with vascular malformations, including arteriovenous malformations, cavernous hemangiomas, microaneurysms, and venous malformations. Recently, an association between chronic encapsulated intracerebral hematoma and stereotactic radiosurgery for arteriovenous malformations has been reported. In general, as the hematoma enlarges, symptoms progress slowly. In this report, we present a case of a 50-year-old woman who had undergone clivus chordoma resection and carbon ion therapy for the clivus respectively 27 and 20 years before developing chronic encapsulated intracerebral hematoma with rapidly progressing disturbance of consciousness. She was referred to our hospital because of difficulty walking due to left hemiparesis. Head computed tomography and magnetic resonance imaging showed a cystic lesion in the right temporal lobe with perifocal edema. On the second day of hospitalization, the patient's consciousness worsened. We suspected a malignant glioma and performed an emergency craniotomy; however, the pathological diagnosis was chronic encapsulated intracerebral hematoma. After the rehabilitation therapy, the patient became ambulatory and was discharged. To the date of reporting, the patient remained recurrence-free. Chronic encapsulated intracerebral hematoma may be due to invasive craniotomy or carbon ion therapy. It usually progresses slowly; however, in…
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