Uchino A, Hasuo K, Uchida K, Matsumoto S, Tsukamoto Y, Ohno M, Masuda K
Department of Radiology, Kyushu University Hospital, Fukuoka, Japan.
Neuroradiology. 1993;35(5):335-8. doi: 10.1007/BF00588362.
Magnetic resonance (MR) images of seven patients with olivary degeneration caused by cerebellar or brain stem haemorrhages were reviewed. In four patients with cerebellar haemorrhage, old haematomas were identified as being located in the dentate nucleus; the contralateral inferior olivary nuclei were hyperintense on proton-density- and T2-weighted images. In two patients with pontine haemorrhages, the old haematomas were in the tegmentum and the ipsilateral inferior olivary nuclei, which were hyperintense. In one case of midbrain haemorrhage, the inferior olivary nuclei were hyperintense bilaterally. The briefest interval from the ictus to MRI was 2 months. Hypertrophic olivary nuclei were observed only at least 4 months after the ictus. Olivary degeneration after cerebellar or brain stem haemorrhage should not be confused with ischaemic, neoplastic, or other primary pathological conditions of the medulla.
回顾了7例因小脑或脑干出血导致橄榄核变性患者的磁共振（MR）图像。在4例小脑出血患者中，发现陈旧性血肿位于齿状核；对侧下橄榄核在质子密度加权像和T2加权像上呈高信号。在2例脑桥出血患者中，陈旧性血肿位于被盖部和同侧下橄榄核，呈高信号。在1例中脑出血患者中，双侧下橄榄核呈高信号。发病至MRI检查的最短间隔为2个月。仅在发病至少4个月后观察到橄榄核肥大。小脑或脑干出血后的橄榄核变性不应与延髓的缺血性、肿瘤性或其他原发性病理状况相混淆。
