Headache and ptosis for four months: potential mimickers of intraparenchymal hemorrhage
| Autor: | Avni A. Chudgar, Jeffrey Forris Beecham Chick, Meaghan M. Mackesy |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
medicine.medical_specialty
Aneurysm Ptosis medicine.artery Internal Medicine medicine Blepharoptosis Humans cardiovascular diseases Thrombus Intraparenchymal hemorrhage Acute hemorrhage Aged business.industry Surgical clipping Headache Intracranial Aneurysm medicine.disease Anesthesia cardiovascular system Emergency Medicine Female Radiology medicine.symptom business Computed tomography of the head Circle of Willis |
| Zdroj: | Internal and emergency medicine. 10(3) |
| ISSN: | 1970-9366 |
| Popis: | Computed tomography demonstrated a hyperdense collection in the left thalamus (Fig. 1), originally thought to represent hemorrhage. Computed tomographic angiography, however, showed that the collection represented an unruptured basilar tip aneurysm (Fig. 2). The patient underwent uncomplicated surgical clipping. Cerebral aneurysms commonly arise at bifurcations within the Circle of Willis. Upwards of 90 % arise within the anterior circulation, while approximately 10 %, as demonstrated in this case, arise within the posterior circulation, with an overall incidence of 2.3 % [1]. Individuals with unruptured aneurysms are usually asymptomatic. Cranial neuropathies and thromboembolic events are rare. Unruptured aneurysms containing thrombus will appear hyperdense on unenhanced computed tomography of the head, potentially mimicking acute hemorrhage [1]. Differentiating aneurysm and hemorrhage is critical as management of the two conditions varies drastically. Computed tomographic angiography is the imaging modality of choice, with 95 % sensitivity for detecting aneurysms greater than 2 mm [2]. |
| Databáze: | OpenAIRE |
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