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I.緒言
頭部に腫瘤を形成する疾患は極めて多岐にわたるが,なかでも腫瘤構成が頭蓋内血管系に関係をもつもの,例えば腫瘤の内容が静脈血の場合は頭蓋内圧の影響をうけかつ体位によつて変化を示す。
主として頭蓋正中線上の皮下に出現する軟らかい球状の腫瘤でしかも皮下静脈,板間静脈,頭蓋内静脈洞と交通がある一連の病態はStromeyer (1850年)によりSinus pericraniiと名付けられた。
We have reported two cases of sinus pericranii and discussed with references. This disease have many nomenclatures, but sinus pericranii have been adopted mostly. The pathogenesis are three types, that is, these are congenital, traumatic, and spon-tinious. However, this pathogenesis has not been well known at the present time. On the diagnosis, we have stressed the angiographic findings by direct puncture of the tumor under Valsalva's maneuver. The operation, generally, consists of extirpation of the tumor, blocking of intracranial venous communication, and cranioplasty of the local skull.
In our twe cases the pathogenesis may be con-genital or spontaneous, and surgical procedure was performed with good results.
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