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Early imaging findings in germ cell tumors arising from the basal ganglia

Title
Early imaging findings in germ cell tumors arising from the basal ganglia
Authors
Lee, So MiKim, In-OneChoi, Young HunCheon, Jung-EunKim, Woo SunCho, Hyun-HaeYou, Sun Kyoung
Ewha Authors
조현혜
Issue Date
2016
Journal Title
PEDIATRIC RADIOLOGY
ISSN
0301-0449JCR Link1432-1998JCR Link
Citation
vol. 46, no. 5, pp. 719 - 726
Keywords
AdolescentBasal gangliaChildEarly stageGerm cell tumorMagnetic resonance imagingSerial images
Publisher
SPRINGER
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
It is difficult to diagnosis early stage germ cell tumors originating in the basal ganglia, but early recognition is important for better outcome. To evaluate serial MR images of basal ganglia germ cell tumors, with emphasis on the features of early stage tumors. We retrospectively reviewed serial MR images of 15 tumors in 14 children and young adults. We categorized MR images of the tumors as follows: type I, ill-defined patchy lesions (< 3 cm) without cyst; type II, small mass lesions (< 3 cm) with cyst; and type III, large lesions (a parts per thousand yen3 cm) with cyst. We also assessed temporal changes of the MR images. On the initial images, 8 of 11 (73%) type I tumors progressed to types II or III, and 3 of 4 (75%) type II tumors progressed to type III. The remaining 4 tumors did not change in type. All type II tumors (5/5, 100%) that changed from type I had a few tiny cysts. Intratumoral hemorrhage was observed even in the type I tumor. Ipsilateral hemiatrophy was observed in most of the tumors (13/15, 87%) on initial MR images. As tumors grew, cystic changes, intratumoral hemorrhage, and ipsilateral hemiatrophy became more apparent. Early stage basal ganglia germ cell tumors appear as ill-defined small patchy hyperintense lesions without cysts on T2-weighted images, are frequently associated with ipsilateral hemiatrophy, and sometimes show microhemorrhage. Tumors develop tiny cysts at a relatively early stage.
DOI
10.1007/s00247-016-3542-x
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의료원 > 의료원 > Journal papers
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