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- Anatomical characteristics of the styloid process in internal carotid artery dissection: Case-control studyPublication . Amorim, JM; Pereira, D; Rodrigues, MG; Beato-Coelho, J; Lopes, M; Cunha, A; Figueiredo, S; Mendes-Pinto, M; Ferreira, C; Sargento-Freitas, J; Castro, S; Pinho, JIntroduction Pathophysiology of cervical artery dissection is complex and poorly understood. In addition to well-known causative and predisposing factors, including major trauma and monogenic connective tissue disorders, morphological characteristics of the styloid process have been recently recognized as a possible risk factor for cervical internal carotid artery dissection. Aims To study the association of the anatomical characteristics of styloid process with internal carotid artery dissection. Methods Retrospective, multicenter, case-control study of patients with internal carotid artery dissection and age- and sex-matched controls. Consecutive patients with internal carotid artery dissection and controls with ischemic stroke or transient ischemic attack of any etiology excluding internal carotid artery dissection, who had performed computed tomography angiography, diagnosed between January 2010 and September 2016. Two independent observers measured styloid process length and styloid process distance to internal carotid artery. Results Sixty-two patients with internal carotid artery dissection and 70 controls were included. Interobserver agreement was good for styloid process length and styloid process-internal carotid artery distance (interclass correlation coefficient = 0.89 and 0.76, respectively). Styloid process ipsilateral to dissection was longer than left and right styloid process in controls (35.8 ± 14.4 mm versus 30.4 ± 8.9 mm and 30.3 ± 8.2 mm, p = 0.011 and p = 0.008, respectively). Styloid process-internal carotid artery distance ipsilateral to dissection was shorter than left and right distance in controls (6.3 ± 1.9 mm versus 7.2 ± 2.1 mm and 7.0 ± 2.3 mm, p = 0.003 and p = 0.026, respectively). Internal carotid artery dissection was associated with styloid process length (odds ratio = 1.04 mm-1, 95% confidence interval = 1.01-1.08, p = 0.015) and styloid process-internal carotid artery distance (OR = 0.77 mm-1, 95% confidence interval = 0.64-0.92, p = 0.004). Conclusion Longer styloid process and shorter distance between styloid process and cervical internal carotid artery are associated with cervical internal carotid artery dissection.
- Blue rubber-bleb nevus syndrome: report of a familial case with a dural arteriovenous fistulaPublication . Carvalho, S; Barbosa, V; Santos, N; Machado, EWe report a case of a 45-year-old woman known to have a familial form of blue rubber-bleb nevus syndrome (BRBNS). The patient developed severe occipital headaches and bilateral retroauricular bruits. Cerebral angiography showed a large dural arteriovenous fistula in the torcular region. Central nervous system involvement in BRBNS is not often reported, and most cases of BRBNS are sporadic.
- Choroid plexus tumours: a surgically treated seriesPublication . Barbosa, MD; Rebelo, O; Barbosa, P; Lacerda, A; Fernandes, RChoroid plexus tumours-carcinomas and papillomas are rare, especially in adults, and they pose some problems in their diagnosis and management. We have reviewed a series of nine cases from our institution surgically treated during the last 18 years. Their clinical charts, neuroradiological examinations, surgical technique, neuropathology and follow-up were analysed. In only one case total removal proved to be impossible, but even in cases of total removal recurrence appeared in two cases (one carcinoma and one papilloma). Morbility is especially associated with posterior fossa tumours. These rare tumours are managed surgically. They are usually associated with hydrocephalus, and it is difficult to forecast whether or not permanent CSF drainage will be required. A long-term follow-up is needed in patients with this type of tumour.
- Contributo da neurorradiologia: para o diagnóstico das doenças hereditárias do metabolismoPublication . Casimiro, C; Garcia, P; Fineza, F; Melo Freitas, P; Diogo, L
- Cystic intraventricular schwannoma: case report and review of the literaturePublication . Barbosa, MD; Rebelo, O; Barbosa, P; Gonçalves, J; Fernandes, RIntraventricular schwannoma is an exceedingly rare tumour with only 6 cases described in the literature. One case of a cystic intraventricular schwannoma operated on at our Institution is analyzed and the other cases reported in the literature are reviewed. Complete removal was achieved and no recurrence was noted after a follow-up period of 10 years. Intraventricular schwannomas are rare tumours that are amenable to complete surgical removal, having a good prognosis without the need of adjuvant therapy.
- Epidermal nevus syndrome: an unusual cerebellar involvementPublication . Pereira, S; Serra, D; Melo Freitas, P; Santiago, B; Brito, OThe epidermal nevus syndrome is characterized by several developmental anomalies associated with an epidermal nevus. In addition to the skin, other organs commonly affected include the brain, eyes and musculoskeletal system. We report here on a 24-year-old woman with this syndrome who presented with hemifacial hypertrophy, hearing abnormalities, arrhythmia and an unusual infratentorial brain involvement.
- Estudo de aneurismas cerebrais: por angio-tomografia computorizada cerebralPublication . Pereira, S; Santos, G; Marques, C; Machado, E; Brito, O
- Fístulas da tenda do cerebelo: diagnóstico e tratamentoPublication . Machado, E; Santos, N; Carvalho, S; Freitas, P; Filho, T; Machado, C; Martins, FAmong the 17 intracranial dural fistulae treated in the Department of Neuroradiology of the University Hospital of Coimbra (17 patients, 28 embolizations) between 19/10/98 and 20/11/2000, 4 cases (23%) were located on the tentorium cerebelli. Three patients were men aged 45, 53 and 56 years old. The remaining patient was an 85-year-old woman. All 4 patients were treated by embolization. One underwent post embolization surgical interruption of the draining vein. The authors analyse clinical presentation, complementary tests, therapy and outcome.
- Hemorragia Subaracnoideia e Angiografia Cerebral por Tomografia ComputorizadaPublication . Santos, N; Machado, E; Carvalho, S; Barbosa, MD; Martins, FWe present a review of 57 cases of nontraumatic subarachnoid hemorrhagesubmitted to CT angiography of the cerebral vessels. The purpose of our study was to estimate the value of CT angiography in the detection of intracranial aneurysms. These findings were compared with those from selective angiography. The results showed that CT angiography is a rapid, low-risk technique with a low level of invasiveness and high specificity and sensitivity in the detection of cerebral aneurysms, allowing the planning of endovascular intervention and surgical approach.
- Intraventricular LesionPublication . Bastos-Lima, P; Marques, C; Cabrita, F; Barbosa, MD; Rebelo, O; Rio, F
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