Schmitt R, Wuttke V, Buchner U, Preger R
Institut für Strahlendiagnostik, Klinikum Ingolstadt.
Rofo. 1990 Feb;152(2):180-4. doi: 10.1055/s-2008-1046847.
The sonographic CT and myelographic findings in three peripheral amputation neuromas are described, as well as a cauda equina neuroma following a tear of the lumbar plexus. Sonographically, the peripheral neuromas produced low intensity echoes with sharp differentiation from their highly echogenic surroundings. On CT the neuromas were hypodense, compared with muscle, measuring between 40 and 60 HU and showing only minimal enhancement after contrast. The cauda equina neuroma was shown on myelography as an intradural filling defect situated on the cranial aspect of a traumatic pseudomeningocoele. In view of their characteristic appearances, and the possibility of identifying trigger points, sonography appears to be the method of choice in the diagnosis of peripheral neuromas.
本文描述了3例周围性截肢神经瘤以及1例腰丛撕裂后马尾神经瘤的超声CT和脊髓造影表现。超声检查时，周围性神经瘤产生低回声，与周围高回声环境形成鲜明对比。CT上，神经瘤密度低于肌肉，CT值在40至60HU之间，增强扫描后仅见轻微强化。脊髓造影显示马尾神经瘤为位于创伤性假性脑脊膜膨出颅侧的硬膜内充盈缺损。鉴于其特征性表现以及识别触发点的可能性，超声检查似乎是诊断周围性神经瘤的首选方法。
