Radiology Case Reports (Mar 2022)

Malignant transformation of a dysembryoplastic neuroepithelial tumor presenting with intraventricular hemorrhage

  • Hirotaka Takita, MD,
  • Taro Shimono, MD, PhD,
  • Takehiro Uda, MD, PhD,
  • Hayato Ikota, MD, PhD,
  • Toshiyuki Kawashima, MD, PhD,
  • Daisuke Horiuchi, MD,
  • Eisaku Terayama, MD,
  • Taro Tsukamoto, MD, PhD,
  • Yukio Miki, MD, PhD

Journal volume & issue
Vol. 17, no. 3
pp. 939 – 943

Abstract

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Dysembryoplastic neuroepithelial tumors (DNTs) are benign brain tumors classified as grade 1 in the 2021 World Health Organization (WHO) classification of central nervous system tumors. DNTs rarely undergo malignant transformation and cause symptomatic intracranial hemorrhage. We report a case of malignant transformation of DNT presenting with intraventricular hemorrhage and review the literature on malignant transformation of DNTs. An 18-year-old woman with a history of epilepsy presented with a sudden headache and vomiting. Radiological examination revealed a mass lesion in the left parietal lobe and intraventricular hemorrhage. The patient underwent an emergency craniotomy for brain tumor resection. The lesion was pathologically diagnosed as a malignant transformation of DNT. She had been followed up without tumor recurrence for 2 years after surgery.

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