Search

In this report, we separately performed dynamic computed tomographic perfusion and dynamic susceptibility contrast-T2 magnetic resonance perfusion imaging on 2 cases of brain tumors (one was a glioblastoma, and the other was a central neurocytoma). Between the 2 methods, we saw the discrepancy in values of cerebral blood volume and cerebral blood flow, differences in location of the maximal cerebral blood volume, and regions with abnormal increased cerebral blood flow besides the solid part of the tumors. Both differences and similarities of the 2 techniques with their advantages and pitfalls were analyzed in detail. The developing trends in the near future were also discussed.

Chordoid glioma is a homogeneous tumour involving the third ventricular region of middle-aged women, containing a small central cyst or necrosis. Histologically the tumour has a chordoid appearance. We report a new case with a haemodynamic imaging approach which indicates tumour angiogenesis at the capillary level.

Computed tomograms, angiograms, and operative findings in 18 intra-atrial and 6 para-atrial lateral ventricle tumors were reviewed. Intra-atrial tumors were characteristically homogeneous, with an intraluminal mass effect. The benign types engulfed the choroid glomus; on angiography, the choroidal arteries were enlarged, with a definite tumor blush. Intra-atrial tumors without choroid involvement were usually gliomas. Para-atrial tumors had a low-density center on CT scans (in adults) with an extraluminal mass effect, displaced the glomus, and were avascular on angiography. They were low-grade gliomas in adults and ependymoblastomas in children. Forty non-atrial paraventricular and intraventricular masses were also reviewed. In general, an intraventricular, homogeneous mass which engulfs the choroid glomus on CT and has a significant choroidal artery supply on angiography is of choroidal origin and likely to be benign.