Presentation
Sudden loss of consciousness and fell down.
Patient Data
A large crossing-midline intra-axial mass at the genu of corpus callosum complicated with haemorrhage. It is associated with perilesional oedema and expansion of corpus callosum.
Case Discussion
Differential diagnoses for brain tumour located across the midline at the genu of corpus callosum include high grade butterfly glioma (high grade astrocytomas, IDH-mutant or glioblastomas, IDH-wildtype), primary CNS lymphoma,tumefactive demyelination and cerebral metastases (rare).
In this case of massive haemorrhage from the tumour resulting in diffuse subarachnoid haemorrhage and interventricular haemorrhage, the most likely diagnosis will be high grade glioma, though there are a few reported cases of primary CNS lymphoma.
No definite diagnosis for this case, as patient and family refused for further imaging investigation and histopathology examination.
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