title: [Traumatic aneurysm of the frontopolar artery developing after evacuation of the subdural effusion in a 6-month-old girl (author's transl)].
abstract: A 6-month-old girl developed bilateal subdural effusion after head injury. She gradually improved after the partial stripping of the membrane of the subdural effusion although postoperative tappings of the subdural fluid were necessary. Thirty nine days after the injury, she suddenly suffered from a massive intraventricular hemorrhage. A cerebral angiography showed an aneurysm arising from the proximal part of the right frontopolar artery, which had not been revealed in the previous angiograms. It was obscure whether the congenital anomaly of the arterial wall had been existed or not, but this aneurysm might be mentioned as a traumatic aneurysm and definitely developed after the treatment for the traumatic sequence. The mechanism of this aneurysmal formation was supposed that the arterial wall was initially injured by the abnormal traumatic movement of the brain underneath the falx cerebri, and teared arterial wall was further injured by the fluctuating movements of the brain caused by repeated tappings of the effused fluid. Relation of delayed posttraumatic apoplexy and ruptured posttraumatic aneurysms was also discussed, and analysis of the reported cases of the traumatic aneurysm, as well as aneurysm in the infant, was made.
mesh_terms: D002543:Cerebral Hemorrhage / Q000209:etiology; D002552:Cerebral Ventricles; D006259:Craniocerebral Trauma / Q000150:complications*; D004322:Drainage; D006801:Humans; D007223:Infant; D002532:Intracranial Aneurysm / Q000150:complications / Q000209:etiology* / Q000601:surgery; D008581:Meningitis / Q000601:surgery*; D012422:Rupture, Spontaneous; D013353:Subdural Effusion / Q000209:etiology / Q000601:surgery*