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Technique: Pre and post contrast multiplanar images through the brain have been obtained.
Findings: No previous imaging available for comparison.
There is a well-defined hypodense lesion centred on the right insular cortex extending into the right frontal and temporal lobes measuring 6.0 x 3.5 x 3.7cm. It does not demonstrate any ring enhancement post contrast administration nor is there any identifiable contrast enhancing component elsewhere in the lesion. The lesion exerts mass effect, with partial effacement of the right lateral ventricle and midline shift of 2 mm to the left as measured at the septum pellucidum. A small peripheral hypodense cortical component extends into the inferior aspect of the right frontal lobe. No vascular malformation associated with the lesion.
No acute intracranial haemorrhage or acute cortical infarct. No acute calvarial fracture. The mastoid air cells and paranasal sinuses are aerated.
Impression: Right insular/frontal/temporal non-enhancing hypodense lesion exerting mild local mass-effect. Appearances favour low-grade tumour and MRI is suggested to further characterise.