The history provided revealed that the deceased was a 70 year old man admitted to hospital with diplopia and decreased vision and ptosis of the left eye. C.T. scan revealed a posterior fossa mass probably a meningioma. The patient deteriorated and repeat C.T. scan showed haemorrhage into tumour. He deteriorated further and had urgent craniotomy but died from massive haemorrhage. Autopsy revealed extensive subarachnoid haemorrhage over the base of the brain and the whole ventricular system was filled with blood clot. A left frontal haemorrhage was present in the region of the surgery. No tumour was present. No aneurysm was found but the wall of the proximal end of the intracranial segment of the left internal carotid artery was white and thickened. Histology of this showed vasculitis with the presence of fungal hyphae with the features of Aspergillus. Information was provided only after the autopsy that scans prior to death had shown a mass closely related to but separate from the pituitary involving the roof of the sphenoid and cavernous sinuses. This mass extended to involve the left optic nerve and encased the left internal carotid artery. Invasive Aspergillus sinusitis in a previously normal patient generally presents as an indolent progressive growth of a fleshy mass eroding into contiguous structures. Late complications may include invasion of meninges, optic nerve and carotid artery. There was no evidence that this man was immunosuppressed. This case is presented as a rare example of invasive sinusitis in a previously normal patient. This case is presented as a rare example of invasive sinusitis in a previously normal patient. This case also highlights the importance of adequate accurate information prior to autopsy.