Schubeus P, Schörner W, Henkes H, Hertel G, Felix R
Radiologische Klinik, Universitätsklinikum Rudolf Virchow, Standort Charlottenburg, Freie Universität Berlin.
Rofo. 1989 Dec;151(6):713-9. doi: 10.1055/s-2008-1047273.
The MRI findings in 26 patients with primary syringomyelia and eight patients with a syrinx due to an intramedullary tumour were studied retrospectively. In general, the syrinx in the tumour cases resembled the appearance of primary syringomyelia. However, a specific and sensitive sign of tumour-induced syringomyelia was irregularity of the spinal cord close to the tumour (eight cases of eight), eccentric position of the lumen (seven of eight), and a diffuse increase of signal intensity on T2-weighted images (eight of eight). Primary syringomyelia also showed increased signal intensity on T2-weighted images outside the lumen, but this was closely related to the cavity. The use of Gd-DTPA improved demarcation of the tumour from the syrinx in all cases. Widening of the spinal canal and ectopia of cerebellar tonsils was a typical finding in primary syringomyelia. MRI proved a reliable method for distinguishing between a tumour-induced syrinx and primary syringomyelia.
回顾性研究了26例原发性脊髓空洞症患者及8例因髓内肿瘤导致脊髓空洞的患者的MRI表现。总体而言，肿瘤病例中的脊髓空洞与原发性脊髓空洞症的表现相似。然而，肿瘤性脊髓空洞症的一个特异性且敏感的征象是肿瘤附近脊髓不规则（8例中的8例）、管腔偏心位置（8例中的7例）以及T2加权图像上信号强度弥漫性增加（8例中的8例）。原发性脊髓空洞症在管腔外的T2加权图像上也显示信号强度增加，但这与空洞密切相关。在所有病例中，使用钆喷酸葡胺（Gd-DTPA）可改善肿瘤与脊髓空洞的分界。椎管增宽和小脑扁桃体异位是原发性脊髓空洞症的典型表现。MRI被证明是区分肿瘤性脊髓空洞和原发性脊髓空洞症的可靠方法。
