Hemangioma of the cavernous sinus in a child

An 11-year-old boy presented with diplopia and right cranial nerve VI paresis. MRI demonstrated a T2-hyperintense extra-axial mass in the cavernous sinus. Early heterogeneous enhancement progressed to late homogeneous enhancement. The carotid artery was not narrowed (figure). Slow growth prompted endoscopic transsphenoidal resection. Microscopy demonstrated a vascular tumor with bland endothelial cells and no mitoses. Figure Hemangioma of the cavernous sinus Axial T1-weighted (A) and coronal T2-weighted (B) images show an expansile 3.5 × 2.6 cm tumor in the right cavernous sinus with T1 hypointense and …