Servicio de Radiodiagnóstico, Hospital Universitario de Getafe, Getafe, Madrid, Spain.
Servicio de Cirugía Plástica, Hospital Universitario de Getafe, Getafe, Madrid, Spain.
Radiologia (Engl Ed). 2023 Oct;65 Suppl 2:S74-S77. doi: 10.1016/j.rxeng.2023.09.005. Epub 2023 Sep 16.
Intraneural ganglion cysts are very uncommon lesions, whose diagnosis has increased since the articular theory and the description of the MRI findings were established. We present a case report of a 59-year-old man with symptoms of tarsal tunnel syndrome. Foot and ankle MRI demonstrated the presence of an intraneural cystic lesion in the posterior tibial neve and its connection with the subtalar joint through an articular branch. The identification of the specific radiological signs like the «signet ring sign» allowed establishing an adequate preoperative diagnosis, differentiating it from an extraneural lesion and facilitating the articular disconnection of the nerve branch during surgery.
神经内腱鞘囊肿是非常罕见的病变，自从关节理论和 MRI 表现的描述确立以来，其诊断有所增加。我们报告了一例 59 岁男性，有跗管综合征的症状。足部和踝关节 MRI 显示后胫神经内存在神经内囊性病变，通过关节支与跗关节相连。特定的影像学征象，如“印章环征”的识别有助于建立术前的明确诊断，将其与神经外病变区分开来，并在手术中便于神经分支的关节分离。
