Pierwotne guzy pnia mózgu u dzieci w badaniu rezonansu magnetycznego

Bibliogr. s. 25

Background: Brain-stem gliomas constitute about 10-20% of CNS tumors. The most common site of tumor is the pons, followed by the midbrain and medulla. The aim of the study was to evaluate the variety of MR images of brain-stem gliomas in children depending on the localization according to the WHO classification. Materials/Method: We estimated MR examinations of 76 children (44 girls and 32 boys) with brain-stem tumors. Mean age was 7.8 years (range: 1-18.3 years). Examinations were performed with a 1.5 T scanner in the SE, FSE, and FLAIR sequences in T1- and T2-weighted images. Gadolinium was administered obligatory in each case. Results: Forty-four tumors were localized in the pons, 18 in the midbrain, and 14 in the medulla. No contrast enhancement was observed in 19 tumors in the pons, 3 in the midbrain, and 2 in medulla. In the other cases were varied patterns of contrast enhancement. In three cases, focal lesions were diagnosed, and in 9 cases exophytic tumors were seen. Conclusions: MR images of brain-stem gliomas are typical in the pediatric age group and allow recognizing these lesions properly. This is very important for making therapeutic decisions in these cases.