Hueftle M G, Han J S, Kaufman B, Benson J E
J Comput Assist Tomogr. 1985 Mar-Apr;9(2):263-7. doi: 10.1097/00004728-198503000-00006.
Magnetic resonance (MR) and CT examinations of 26 patients with the established or clinically suspected diagnosis of brain stem glioma were reviewed. Eleven tumors were seen on both MR and CT. The entire extent of the abnormality was better outlined on MR, although CT was more advantageous in demonstrating cystic components and calcium deposition. Magnetic resonance and CT depicted focal intratumoral hemorrhage equally. Magnetic resonance was found to be particularly suitable to follow up the progression or regression of the disease. Of particular interest were two patients with evidence of aqueductal obstruction but normal CT appearance of the midbrain; the causative abnormality, believed to be a glioma, was clearly shown by MR imaging. In nine patients the normal appearance was helpful to exclude the possibility of a brain stem glioma. Thus far, results have shown 100% sensitivity (true positive ratio) and specificity (true negative ratio) with MR in the evaluation of brain stem gliomas. It is concluded that MR imaging should be the examination of choice and could be the definitive screening procedure in patients with suspected brain stem glioma.
回顾了26例已确诊或临床怀疑为脑干胶质瘤患者的磁共振（MR）和CT检查结果。在MR和CT上均发现了11个肿瘤。尽管CT在显示囊性成分和钙沉积方面更具优势，但MR能更好地勾勒出异常的整体范围。MR和CT对肿瘤内局灶性出血的显示效果相同。发现MR特别适合于随访疾病的进展或消退情况。特别值得关注的是两名患者，他们有导水管梗阻的证据，但中脑CT表现正常；MR成像清楚地显示了被认为是胶质瘤的致病异常。在9名患者中，正常表现有助于排除脑干胶质瘤的可能性。到目前为止，结果显示MR在评估脑干胶质瘤方面的敏感性（真阳性率）和特异性（真阴性率）均为100%。结论是，MR成像应作为首选检查，并且可以成为疑似脑干胶质瘤患者的确定性筛查程序。
