Brain CT Scans in Clinical Practice by Usiakimi Igbaseimokumo

Author:Usiakimi Igbaseimokumo
Language: eng
Format: epub, pdf
ISBN: 9783030148287
Publisher: Springer International Publishing

3.4.4 Giant Aneurysms

Giant or large aneurysms maybe visible on brain CT scan . They exert a lot of mass effect and may precipitate hydrocephalus . The differential diagnosis to consider is a tumor . Aneurysms generally have a smoother and more rounded outline compared to tumors and are often located in the areas where aneurysms are usually found—the suprasellar cistern and the sylvian fissures . In addition, SAH associated with tumors like gliomas , meningioma or pituitary tumors for example, is a very rare occurrence. Therefore, a mass lesion like Fig. 3.13 in association with SAH equals a large aneurysm until proven otherwise and you should act quickly.

Figure 3.13Brain CT scan showing a giant anterior communicating artery aneurysm . Note the widespread SAH and hydrocephalus . The outline of the aneurysm is made obvious by the blood surrounding the aneurysm wall in the interhemispheric fissure (red arrows)

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