Arooj Shumaila, Azeemuddin Muhammad
J Pak Med Assoc. 2014 Aug;64(8):949-51.
Piriformis syndrome is a rare entity resulting in severe unilateral isolated buttock pain shooting in nature, non discogenic in origin. MR imaging of pelvis plays an important role in such patients to see the normal anatomy of piriformis muscle and its relationship with sciatic nerve. A 35-year-old woman presented with one year history of radiating leg pain with normal MR lumbosacral spine. MRI pelvis showed an abnormal orientation of left sciatic nerve through cleaved fibers of the piriformis muscle. The patient's symptoms were relieved by surgical decompression. The purpose of this case report is to show the role and importance of MR imaging for tracing sciatic nerve and its relationship to the Piriformis muscle. MR imaging of pelvis for sciatic nerve plays an important role in symptomatic patients with isolated buttock pain having normal MRI lumbosacral spine.
梨状肌综合征是一种罕见病症，会导致严重的单侧臀部剧痛，呈放射性，并非由椎间盘源性引起。骨盆的磁共振成像（MR成像）对这类患者很重要，可用于观察梨状肌的正常解剖结构及其与坐骨神经的关系。一名35岁女性，有一年的腿部放射性疼痛病史，腰骶部脊柱MR成像正常。骨盆MRI显示左侧坐骨神经通过梨状肌的劈开纤维呈异常走行。手术减压后患者症状缓解。本病例报告的目的是展示MR成像在追踪坐骨神经及其与梨状肌关系方面的作用和重要性。对于有孤立性臀部疼痛且腰骶部脊柱MRI正常的有症状患者，骨盆的坐骨神经MR成像起着重要作用。
