The authors present the clinical and pathological features of a malignant triton tumour (MTT) in the lateral ventricle with neurofibromatosis type 1. A 57 year-old man presented with disorientation and memory disturbance. A Computed tomographic scan and magnetic resonance imaging studies revealed an enhancing lesion in the left lateral ventricle. A parieto-occipital transcallosal approach was taken and resection of the lesion was performed. The operative findings suggested that the tumour arose from the perivascular nerves. The final pathological diagnosis was a MTT. This is the first case of an intraventricular MTT. Aggressive treatment including radical surgery combined with radiochemotherapy is recommended for a MTT of the central nervous system.

We report a case of a ruptured aneurysm occurring at the peripheral bifurcation of the azygos anterior cerebral artery with fenestration at the unilateral horizontal segment, Ai. Further, hypoplasia was noted at the contralateral A i. It is considered extremely rare that an aneurysm is cornplicated by such a combination of anomalies. Presence of these anomalies might significantly influence hemodynamics, and hemodynamic stress might play an important role in the occurrence and growth of an aneurysm.

No abstract

No abstract

No abstract