Masson's tumour in the right parietal lobe after stereotactic radiosurgery for cerebellar AVM: Case report and review

Incidental Papillary Endothelial Hyperplasia of the Cavernous Sinus: Case Report and Review of the Literature

“…[21]Chemotherapy has been recommended by some authors, however, there is no sufficient evidence currently available to confirm benefit. [8] Our case is unique due to the co-occurrence of a prolactinoma and incidentalcavernous sinus IPEH.Despite the close proximity between the lesions, they represent two distinct and unrelated pathologies. The IPEH, although large and completely filling the cavernous sinus, was completely asymptomatic at the time of presentation.…”

“…CT usually demonstrates a circumscribed hyperdense mass. [8,10] When found in the skull base, significant bone erosion may be observed. IPEH appears as a highly vascular isointense or mildly hyperintense mass on T1-weighted MRI and hyperintense on T2 sequences.T1-weighted MRIwith gadolinium reveals an intensely enhancing homogenous mass.…”

“…IPEH appears as a highly vascular isointense or mildly hyperintense mass on T1-weighted MRI and hyperintense on T2 sequences.T1-weighted MRIwith gadolinium reveals an intensely enhancing homogenous mass. [8,21] Angiographic findings are variable and range from angiographically occult to a vascular blush. [18,23] The clinical presentation of IPEH is variable and dependent upon the location of the lesion.…”

“…Anastomoses between these vessels may re-establish blood flow through the organizing mass of connective tissue, resulting in a highly vascular lesion. [8,10,15,16,19] Histologically, IPEH is heterogeneous in appearance consisting of multiple areas in various stages of thrombus organization and revascularization. [13]In the early stage, the lesion consist of fibrin clot which serves as a scaffolding for proliferating endothelial cells that dissect into the thrombus.…”

“…[7,21] Intracranial IPEH israre, and may occur as an extra-axial or intraparenchymal mass. [8,15] Progressive lesional growth results in mass effect on adjacent structures leading to various neurologic deficits. Curative treatment is through complete surgical resection, however, in skull bases lesions, this goal may be difficult to achieve without significant morbidity.…”