Hamano T, Mutoh T, Hirayama M, Ito K, Kimura M, Aita T, Kiyosawa K, Ohtaki T, Kuriyama M
Second Department of Internal Medicine, Fukui Medical University, Yoshida-gun, Japan.
J Neurol Sci. 1999 Jun 1;165(2):184-7. doi: 10.1016/s0022-510x(99)00086-6.
We report here magnetic resonance imaging (MRI) findings of two patients with benign monomelic amyotrophy of lower limb. Both subjects showed unilateral amyotrophy of the lower limb with a benign clinical course, and the affected muscles demonstrated neurogenic changes. On T1- and T2-weighted MRI, marked atrophy and increased signal intensity were found mainly in gastrocnemius and soleus muscles. Moreover, MRI examination also revealed that thigh muscles including semitendinosus, semimembranosus, and vastus intermedius and lateralis muscles were involved in one of the patients. We concluded that muscle MRI is very useful for detecting affected muscles, especially deep skeletal muscles in patients with benign monomelic amyotrophy of lower limb.
我们在此报告两例下肢良性单肢肌萎缩患者的磁共振成像（MRI）结果。两名受试者均表现为下肢单侧肌萎缩，临床病程呈良性，且受累肌肉显示出神经源性改变。在T1加权和T2加权MRI上，主要在腓肠肌和比目鱼肌中发现明显萎缩和信号强度增加。此外，MRI检查还显示，其中一名患者的大腿肌肉包括半腱肌、半膜肌以及股中间肌和股外侧肌也受到累及。我们得出结论，肌肉MRI对于检测受累肌肉非常有用，尤其是对于下肢良性单肢肌萎缩患者的深部骨骼肌。
