Hydatid disease is widely distributed worldwide; it is caused by a parasite belonging to the Echinococcus species. It mostly affects the liver and the lungs, involvement of the spinal canal is reported to be around 0.2%, but affection of the peripheral nerves is extremely rare. A 42-year-old lady was complaining from left loin pain and backache, with pain in the outer aspect of the left thigh for the last 5 years. During clinical examination, the ankle and the knee reflexes were normal and there was no muscle wasting. There was hyperesthesia on the outer aspect of the left leg. Magnetic resonance imaging of the back demonstrated a cystic lesion between the 4th and the 5th lumbar vertebrae which was pushing the psoas muscle anteriorly and causing atrophy of the muscle. The patient received anthelminthic medications for 1 month before surgery with little improvement of the clinical and the radiological condition. During surgery the cyst was found to arise from the lumbar nerve sheath and was apparent to be hydatid cyst because it was containing small daughter cysts. Isolation of the cyst was done and complete evacuation with deroofing of the cyst was done. The cavity of the cyst was irrigated with a solution of chlorhexidine as a scolicidal agent. The patient was discharged home after 3 days with no post-operative complications, anthelminthic medications prescribed for 3 months. The treatment options vary depending on the region affected by the cyst; it may be treated by complete cyst excision, evacuation, and deroofing. Preventing spillage of the contents of the cyst during surgery and the use of scolicidal agents are mandatory to decrease the rate of recurrence. It is very important to exclude other organ involvement particularly pulmonary involvement before surgery.

中文翻译：

---

腰丛神经包虫囊肿：病例报告并文献复习

包虫病在世界范围内广泛分布。它是由属于棘球oc菌种的寄生虫引起的。它主要影响肝和肺，据报道椎管受累约为0.2％，但对周围神经的影响却极为罕见。一名42岁的女士抱怨左腰疼痛和腰酸，最近5年左大腿外侧疼痛。在临床检查期间，脚踝和膝盖反射正常，没有肌肉萎缩。左腿外侧有感觉异常。背部的磁共振成像显示，第4和第5腰椎之间存在囊性病变，向前推动腰肌，并导致肌肉萎缩。患者在手术前1个月接受了驱虫药治疗，临床和放射学状况几乎没有改善。在手术过程中，发现囊肿起源于腰神经鞘，并且显然是包虫囊肿，因为它含有小子囊肿。完成囊肿的分离，并完成囊顶除草工作。囊肿腔用洗必泰溶液作为杀虫剂冲洗。该患者在3天后出院，没有术后并发症，开了3个月的驱虫药。治疗方案取决于受囊肿影响的区域。可以通过完全的囊肿切除，疏散和除顶来治疗。必须防止在手术期间囊肿内容物的溢出和使用杀伤剂，以降低复发率。在手术前排除其他器官受累，特别是肺部受累非常重要。