Peterman S B, Steiner R E, Bydder G M, Thomas D J, Tobias J S, Young I R
Neuroradiology. 1985;27(3):202-7. doi: 10.1007/BF00344488.
The NMR scans of twenty-six patients who were referred with the clinically suspected or histologically verified diagnoses of brain stem tumour were reviewed. Twenty-one patients (eleven children and ten adults) had scans that were positive for tumour. Nine of these had histological confirmation. Eleven were irradiated without histology on the basis of the clinical diagnosis. The remaining patient was treated expectantly. The other five patients (two children and three adults) had CT and NMR scans that were negative for tumours. Clinical follow-up of these five cases for 9 to 29 months disclosed no further evidence of tumour. All but one tumour had evidence of an increased T1 and T2. Mass effects were seen in all but one case (not the same as the first exception). Multiplanar imaging was useful in determining intra- or extra-axial location as well as tumour extent. Intravenous Gadolinium-DTPA (a paramagnetic contrast agent) showed tumour enhancement in the two patients in whom it was used. NMR showed more extensive abnormality than CT in nineteen patients and similar abnormality to CT in two patients. CT demonstrated calcification better than NMR in the three cases in which it was observed.
回顾了26例因临床怀疑或组织学确诊为脑干肿瘤而转诊患者的核磁共振扫描结果。21例患者（11名儿童和10名成人）的扫描显示肿瘤呈阳性。其中9例有组织学证实。11例基于临床诊断在未进行组织学检查的情况下接受了放疗。其余1例患者接受了观察等待治疗。另外5例患者（2名儿童和3名成人）的CT和核磁共振扫描显示肿瘤呈阴性。对这5例患者进行9至29个月的临床随访，未发现肿瘤的进一步证据。除1例肿瘤外，所有肿瘤均有T1和T2信号增强的表现。除1例（与第一个例外情况不同）外，所有病例均可见占位效应。多平面成像有助于确定肿瘤位于轴内还是轴外以及肿瘤范围。在使用静脉注射钆喷酸葡胺（一种顺磁性造影剂）的2例患者中，核磁共振显示肿瘤强化。在19例患者中，核磁共振显示的异常比CT更广泛，在2例患者中，核磁共振显示的异常与CT相似。在观察到钙化的3例病例中，CT显示钙化比核磁共振更好。
