Department of Diagnostic Radiology, Alexandra Hospital, Singapore.
Singapore Med J. 2009 Nov;50(11):1102-8; quiz 1109.
Ganglion cysts arising from the posterior cruciate ligament (PCL) of the knee are rare. We describe a 21-year-old Chinese woman who presented with right knee pain following a twisting injury six months prior. Her pain was exacerbated by squatting, although her range of knee motion was full. Magnetic resonance imaging showed a lobulated, well-defined, T1-hypointense and T2-hyperintense, septated cystic mass arising from the posterior aspect of the PCL. The diagnosis of a PCL ganglion cyst was confirmed by computed tomography-guided aspiration of the cyst. Due to persistent mild knee pain, the patient eventually underwent arthroscopic decompression of the ganglion cyst. The clinical features, diagnosis and management of PCL ganglion cysts are discussed.
膝关节后交叉韧带（PCL）来源的神经腱鞘囊肿较为罕见。我们描述了一位 21 岁的中国女性，她在六个月前扭伤后出现右膝疼痛。她的疼痛在蹲下时加重，但膝关节活动范围完全正常。磁共振成像显示一个分叶状、边界清楚的 T1 低信号和 T2 高信号、分隔的囊性肿块起源于 PCL 的后侧面。通过 CT 引导下对囊肿进行抽吸，明确诊断为 PCL 神经腱鞘囊肿。由于持续存在轻度膝关节疼痛，患者最终接受了关节镜下神经腱鞘囊肿减压术。讨论了 PCL 神经腱鞘囊肿的临床特征、诊断和治疗。
