Tomono Y, Takeuchi S, Nose T
Department of Neurosurgery, University of Tsukuba, Ibaraki.
Neurol Med Chir (Tokyo). 1996 Jun;36(6):380-3. doi: 10.2176/nmc.36.380.
A 66-year-old female presented with a large organized hematoma within an acoustic neurinoma. She had suffered from diminished hearing for 20 years and had headache 1 week before presentation. Computed tomography demonstrated an inhomogeneously high density cerebellopontine angle mass, and magnetic resonance imaging showed a mass with heterogeneous intensity and gadolinium-diethylenetriaminepenta-acetic acid enhancement of only the peripheral surface of the mass and the inner parts of the internal auditory meatus. At operation the majority of the mass was soft and feature-less with a firm capsule, and a yellowish soft tumor was removed from the perimeatal area. Histological examination showed the mass was an acoustic neurinoma with a large organized hematoma. Extensive hemorrhage from an abnormal vascularity in the tumor had repeated followed by granulomatous organization.
一名66岁女性因听神经瘤内有一个巨大的机化血肿前来就诊。她听力减退已有20年，就诊前1周出现头痛。计算机断层扫描显示桥小脑角区有一个密度不均匀的高密度肿块，磁共振成像显示肿块信号不均匀，钆喷酸葡胺增强仅见于肿块外周表面及内耳道内部。手术时，肿块大部分质地柔软且无特征，有一个坚实的包膜，从耳道周围区域切除了一个淡黄色的软肿瘤。组织学检查显示肿块是一个伴有巨大机化血肿的听神经瘤。肿瘤内异常血管反复大量出血，随后出现肉芽肿性机化。
