Lana-Peixoto M I, Lana-Peixoto M A, Belisário Campos G
Arq Neuropsiquiatr. 1985 Dec;43(4):396-402. doi: 10.1590/s0004-282x1985000400010.
A 25 years old woman was admitted with a history of apparent hypertrophy of the calves, specially on the left, slight pain in the legs and difficulty in walking. Electromyography showed giant motor unit potentials with complete interference pattern. Biopsy of both gastrocnemii was performed revealing a cysticercus among inflammatory infiltrate and changes of the muscle fibers. Review of the literature disclosed 12 other reported cases. The age ranged from 10 to 35 years with a median of 25 years. Pseudohypertrophic myopathy due to cysticercosis has been found twice more common in males than in females. History of epilepsy and muscle pain occurs in about one half of the cases and muscle weakness in about one third of them. Usually there is simultaneous involvement of the upper and lower limb girdles. Myotonia is rare but subcutaneous nodules are frequently found. Our case is unique in the literature in which the pseudohypertrophy was confined to the legs and electromyography showed giant motor unit potentials. The pathogenesis of this condition is discussed and attention is called to the differential diagnosis with other pseudohypertrophic muscular conditions such as pseudohypertrophic muscular dystrophy, myotonia congenita, trichinosis, hypothyroidism, amyloidosis and glycogenosis of type I (Pompe's disease) in its juvenile form.
一名25岁女性因小腿明显肥大（尤其是左侧）、腿部轻微疼痛及行走困难入院。肌电图显示巨大运动单位电位及完全干扰型。对双侧腓肠肌进行活检，结果显示在炎性浸润及肌纤维改变中发现一个囊尾蚴。文献回顾发现另外12例报告病例。年龄范围为10至35岁，中位数为25岁。囊尾蚴病所致假性肥大性肌病在男性中的发现率是女性的两倍多。约一半病例有癫痫和肌肉疼痛病史，约三分之一病例有肌肉无力症状。通常上肢和下肢带同时受累。肌强直罕见，但常发现皮下结节。我们的病例在文献中很独特，其假性肥大仅限于腿部，且肌电图显示巨大运动单位电位。本文讨论了这种情况的发病机制，并提请注意与其他假性肥大性肌肉疾病的鉴别诊断，如假性肥大性肌营养不良、先天性肌强直、旋毛虫病、甲状腺功能减退、淀粉样变性及幼年型I型糖原贮积病（庞贝病）。
