Atypical Teratoid Rhabdoid Tumor

  • Etiology: rhabdoid cells are hallmark but only comprise fraction of tumor
  • Imaging: heterogeneous (cysts, hemorrhage, calcification), off midline in 50%, cerebellar (50%) > supratentorial
  • Complications: 20% with CSF metastases at presentation
  • Clinical: medulloblastoma look alike in infants < 2 years old (typical medulloblastoma age is 5 years old), consider ATRT when large brain tumor found in child < 3 years old

Radiology Cases of Atypical Teratoid / Rhabdoid Tumor