[Dystrophia myotonica Type 1 associated with glioblastoma: a case report].

Rinsho shinkeigaku = Clinical neurology(2022)

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摘要
This case involved a 65-year-old woman, who had been suffered from weakness in both legs for 10 years. She had not been diagnosed of dystrophia myotonica type 1 (DM1) despite her son's diagnosis of DM and her distinct facial features and gait anomaly. During her son's recent clinical visit, she was finally suspected of having DM. She was sent to our institution, where a distinct muscle atrophy and grip myotonia were observed and a genetical examination was performed. The sequencing data confirmed her diagnosis of DM1 due to the distinct 230-900 CTG repeats found in the dystrophia myotonica protein kinase gene 3' untranslated region. A brain MRI revealed an abnormal lesion with irregular ring-enhancement at the right temporal lobe. Because of the steady growth of the lesion during one month observation, a surgical intervention was performed in our institution. The histopathological examination gave a diagnosis of glioblastoma multiforme (GBM). The clinical management of the patient required special cares during the perioperative periods due to the distinct pathological manifestation of DM. The risk of developing cancer in DM patients has been estimated about twice as much as general population. Since GBM developed in the DM patient is rarely reported, we present this rare case with a few insights: the difficulties of the clinical management of DM patients under the perioperative stress; the pathological contribution of DM to the malignant transformation of the glial cells.
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关键词
cancer risk.,dystrophia myotonica,glioblastoma
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