Pediatric Radiology

, Volume 46, Issue 5, pp 719–726 | Cite as

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

  • So Mi Lee
  • In-One KimEmail author
  • Young Hun Choi
  • Jung-Eun Cheon
  • Woo Sun Kim
  • Hyun-Hae Cho
  • Sun Kyoung You
Original Article



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.

Materials and methods

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 (≥3 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.


Adolescent Basal ganglia Child Early stage Germ cell tumor Magnetic resonance imaging Serial images 


Compliance with ethical standards

Conflicts of interest



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Copyright information

© Springer-Verlag Berlin Heidelberg 2016

Authors and Affiliations

  • So Mi Lee
    • 1
    • 3
  • In-One Kim
    • 2
    Email author
  • Young Hun Choi
    • 2
  • Jung-Eun Cheon
    • 2
  • Woo Sun Kim
    • 2
  • Hyun-Hae Cho
    • 1
    • 4
  • Sun Kyoung You
    • 1
    • 5
  1. 1.Department of RadiologySeoul National University College of MedicineSeoulRepublic of Korea
  2. 2.Department of Radiology and Institute of Radiation MedicineSeoul National University College of MedicineSeoulRepublic of Korea
  3. 3.Department of RadiologyKyungpook National University Medical CenterDaeguRepublic of Korea
  4. 4.Department of RadiologyEwha Woman’s University Mokdong HospitalSeoulSouth Korea
  5. 5.Department of RadiologyChungnam National University HospitalDaejeonRepublic of Korea

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