Clinical and neuroradiologic findings in infants with intracranial ependymomas

Anne M. Comi, James W. Backstrom, Peter C. Burger, Patricia K. Duffner

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42 Scopus citations


Typical clinical characteristics, neuroradiologic findings, and initial neuroradiologic studies were reviewed for 40 patients <3 years of age with intracranial ependymomas, who were treated in the Pediatric Oncology Group (prolonged postoperative chemotherapy and delayed radiation for children <3 years of age with malignant brain tumors). The study included 16 females and 24 males, aged 3 to 35 months, who were diagnosed and registered in the study between 1986 and 1990. Commonly, patients presented with vomiting (70%), ataxia (53%), headache (28%), lethargy (28%), increased head circumference (23%), and irritability (23%). Duration of symptoms before diagnosis ranged from 1 day to 11 months. Thirty-five tumors (88%) were infratentorial; average tumor size was 4.3 (± 1.4) x 4.2 (± 1.7) x 4.1 (± 1.8) cm at presentation. Noncontrast CT scans were performed on 23 patients; 13 (57%) were isodense to surrounding brain tissue and 13 (57%) were calcified. Contrast CT scans of 29 patients revealed that 28 (97%) were enhanced. Of the 15 T1-weighted MRI scans, 10 (67%) demonstrated low-signal intensity tumors, and 15 (94%) of the 16 T2-weighted scans revealed high-signal tumors. Forty- three percent of the tumors were cystic. Blood was observed within only 2 tumors and peritumoral edema was uncommon. Twenty-five percent of the ependymomas extended out to involve the dura, and 97% of the infratentorial tumors showed characteristic plasticity. Hydrocephalus was present in 34 (85%) children.

Original languageEnglish (US)
Pages (from-to)23-29
Number of pages7
JournalPediatric Neurology
Issue number1
StatePublished - Jan 1998

ASJC Scopus subject areas

  • Pediatrics, Perinatology, and Child Health
  • Neurology
  • Developmental Neuroscience
  • Clinical Neurology


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