Cavernous hemangioma located at the foramen of Monro: Radiopathological correlation

Abstract

Intraventricular cavernous hemangiomas are rare. Amongst them, cavernomas located at the foramen of Monro are of greater interest because of their rare location, varied symptoms, and often association with hydrocephalus. We present a rare case of cavernous hemangioma located at foramen of Monro, with its radiopathological confirmation.

Keywords: Cavernous hemangioma; foramen of monro; intraventricular.

Figure 1(A-C):

Magnetic resonance image (MRI) reveals a relatively well-delineated anterior third ventricular mass located at the foramen of Monro, showing heterogeneous signal intensity with hyperintense hemorrhagic areas (white arrow) within on axial T1WI (A). Typical peripheral hemosiderin rim of low signal intensity (black arrow) is seen on T2WI (B). Post-contrast T1WI image shows mild heterogeneous enhancement (double arrow) of the lesion (C)

Figure 2(A, B):

Susceptibility-weighted images show marked blooming of the lesion (white arrow) confirming its hemorrhagic nature (A). Associated developmental venous anomaly (double arrow) is seen in left cerebellar hemisp here (B)

Figure 3

Frozen and H and E sections reveal cavernous hemangioma with large vascular spaces (black arrows) lined by endothelial cells