Atypical Pilocytic Astrocytoma of the Third Ventricle Appearing as a Colloid Cyst

  title={Atypical Pilocytic Astrocytoma of the Third Ventricle Appearing as a Colloid Cyst},
  author={Ulrich Missler and Michael Zimmermann and Holger Grehl},
  journal={Clinical Neuroradiology},
Introduction There are numerous reports on colloid cysts of the third ventricle in the literature [1–5]. Clinically, they are rare tumors mostly appearing with signs of increased intracranial pressure caused by occlusive hydrocephalus [1]. They typically present as hyperto isodense non-contrast-enhancing masses on computed tomography (CT). Hypodense colloid cysts are regarded as uncommon [6]. The description of the signal intensity of colloid cysts on magnetic resonance imaging (MRI) varies… CONTINUE READING


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