翻訳と辞書 Words near each other ・ Tubefilter ・ Tubek ・ Tubeless tire ・ Tubelining ・ Tubelip wrasse ・ Tubelord ・ TubeMogul ・ Tubemouth whipray ・ Tubenose ・ Tubenose goby ・ Tuber ・ Tuber (fungus) ・ Tuber aestivum ・ Tuber anniae ・ Tuber cinereum ・ Tuber cinereum hamartoma ・ Tuber donnagotto ・ Tuber gibbosum ・ Tuber Hill ・ Tuber ladder fern ・ Tuber lijiangense ・ Tuber macrosporum ・ Tuber melanosporum ・ Tuber microspermum ・ Tuber microspiculatum ・ Tuber of vermis ・ Tuber oregonense ・ Tuber polyspermum ・ Tuber sinoalbidum ・ Tuber sinoexcavatum Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Tuber cinereum hamartoma ： ウィキペディア英語版 Tuber cinereum hamartoma Tuber cinereum hamartoma (also known as hypothalamic hamartoma) is a non cancerous tumor in which a disorganized collection of neurons and glia accumulate at the tuber cinereum of the hypothalamus on the floor of the third ventricle. It is a congenital malformation, included on the spectrum of gray matter heterotopias. Formation occurs during embryogenesis, typically between days 33 and 41 of gestation. Size of the tumor varies from one to three centimeters in diameter, with the mean being closer to the low end of this range. It is estimated to occur at a frequency of one in one million individuals. ==Signs and symptoms== The classic presentation is gelastic or laughing epilepsy, a disorder characterized by spells of involuntary laughter with interval irritability and depressed mood. The tumor can be associated with other seizure types as well as precocious puberty and behavioral disorders. Gelastic epilepsy has been more classically associated with sessile lesions and precocious puberty reported with pedunculated morphology. More recent epidemiologic studies have found these associations to be less consistent, with gelastic epilepsy predominant in the majority of patients regardless of morphology. Hypothalamic hamartomas are found in 33% of patients with true precocious puberty. The etiology of this relationship is unclear, but it is suspected in some cases to be due to a nonphysiological secretion of GnRH. A case of hamartoma has also been reported to secrete CRH, causing excessive ACTH production. Seizures often begin when patients are young, although studies have shown adult onset as well. Many causes of the epilepsy have been theorized, with EEG often finding the hamartoma itself as the source of electrical activity, or epileptogenic focus. With chronic seizures, cognitive decline can develop, which can manifest as poor school performance, decreased nervous stimulus IQ, or limited socialization. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Tuber cinereum hamartoma」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.