Figure 4From: An intraventricular meningioma and recurrent astrocytoma collision tumor: a case report and literature review Computed tomography (CT) examination showing astrocytoma recurrence in October 2010. (A-C) A low-density lesion was located in the left lateral ventricle trigone and appeared irregular and cystic; a round, high-density lesion was observed in the center of the cystic tumor (arrowed in B).Back to article page