PMC10405881_01
Cranioencephalic CT: right frontolateral neoplastic lesion with extensive oedema halo (red arrow)
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A cranioencephalic computed tomography (CT) scan showed multiple supra- and infratentorial lesions with contrast enhancement, some with vasogenic oedema causing mass effect, without hydrocephalus (right frontal lobe, left inferior temporal pole, left internal intralenticular region and right cerebellar hemisphere) (Fig. 1).
Cranioencephalic CT venogram: absence of contrast filling the sigmoid sinus and jugular bulb (red arrows)
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FDG-PET SCAN: In the cerebral study, three foci of intense hypermetabolism were observed; respectively, in a large mass in the right frontal lobe, near the left caudate nucleus, and in the left temporal lobe. It also refers to an area of hypometabolism involving the frontal lobes, probably related to oedema. In the whole-body study, foci with abnormal and significantly increased uptake of F18-FDG suggestive of malignant infiltration of high glycolytic metabolic grade are not visible
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MRI (T2, T1): cortico-subcortical right frontal lateral lesion. On T2 sequences, they appear with irregular morphology and well-defined boundaries that tend to be hypodense, enhancing homogeneously and intensely after contrast. There is surrounding vasogenic oedema around the right frontal lesion (measuring 37x34x33 mm)
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