Well-circumscribed, minimally enhancing glioblastoma multiforme of the trigone: a case report and review of the literature

Glioblastoma multiforme (GBM) is known to present within the lateral ventricle but is relatively infrequent and predominantly found in the frontal horn or body of the ventricle. A GBM located within the trigone is rare, and one that appears well-circumscribed, homogeneous, and minimally contrast enhancing, as demonstrated in this patient, is highly unusual.