Agenesia da artéria carótida interna: relato de caso

Neves, William da Silva; Kakudate, Milton Yochiharu; Cêntola, Crescêncio Pereira; Garzon, Raphael Gouveia; d'Água, Américo Poça; Sanches, Rafaelo

doi:10.1590/s0100-39842008000100015

Cited by 10 publications

(13 citation statements)

References 6 publications

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“…The vast majority of reported asymptomatic cases with ICA agenesis are one-sided, although there are scarce papers of asymptomatic cases of bilateral ICA agenesis [7]. Differential diagnoses, such as total occlusion or dissection, must be excluded by inspecting the bony carotid canal on CT, as the demonstration of a normal bony carotid canal rules out developmental ICA anomalies [6]. …”

Section: Discussionmentioning

confidence: 99%

“…The agenesis of ICA is associated with a higher incidence of intracranial aneurysms, transsphenoidal encephaloceles, and an extensive rete mirabilis (vascular network interrupting the continuity of an artery or vein in the tissue) in the cranial base [16]. The clinical symptoms may be related with associated vascular insufficiency and/or intracranial ischemia due to changes in collateral flow.…”

Section: Discussionmentioning

confidence: 99%

“…The clinical symptoms may be related with associated vascular insufficiency and/or intracranial ischemia due to changes in collateral flow. Cases may present with recurrent headaches, blurring vision, loss of audition, hemi-paresis with or without cranial nerve palsy [2356]. Patients may also present with subarachnoid hemorrhage as a complication of an associated aneurysm.…”

Section: Discussionmentioning

confidence: 99%

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Congenital Agenesis of Right Internal Carotid Artery: A Report of Two Cases

Kahraman

Özdemi̇r

et al. 2016

Journal of the Belgian Society of Radiology

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Congenital unilateral agenesis of the internal carotid artery (ICA) is a rare anomaly. Due to proper sufficient collateral circulation via the circle of Willis most cases are asymptomatic, but patients can also present with ischemic or hemorrhagic cerebrovascular insults. The absence of the bony carotid canal is essential to differentiate this anomaly from chronic ICA occlusion. Awareness of this situation by clinicians and radiologists is essential because these patients have an increased incidence of various intracranial pathologies. We report two cases of this rare developmental congenital abnormality occurring in two young patients and describe the presentation, diagnosis, determined developmental causes, imaging findings, and complications.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Congenital Agenesis of Right Internal Carotid Artery: A Report of Two Cases

Kahraman

Özdemi̇r

et al. 2016

Journal of the Belgian Society of Radiology

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“…Most of the patients with ICA agenesis are asymptomatic, some are discovered incidentally, or the diagnosis is suggested by the finding of collateral circulation 3,4,[6][7][8] . It is thought that the development of these collaterals increases the risk of aneurysm formation and subarachnoid haemorrhage 7 , as well as hemodynamic disturbance harbouring a higher risk for ischemic stroke 6 .…”

Section: Discussionmentioning

confidence: 99%

The missed missing hole

Porto

Silva

Domingues

et al. 2012

Arq. Neuro-Psiquiatr.

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In everyday clinical practice, neurologists frequently encounter complex clinical cases in which a full analysis of several variants are essential to reach the right diagnosis. The resolution of a doubtful case may rely on the recognition of a very specific diagnostic clue. The objective of this report was to describe a case in which the prompt recognition of a very subtle imaging feature in the emergency room could have precluded further extensive diagnostic investigations. case rePorTA 34-year-old woman came into the Emergency department with a worsening headache. The symptoms had begun two weeks earlier, with a holocranial pulsatile headache that gradually worsened and became unbearable in the preceding three days. In association with the pain, she complained of nausea, vomiting and intolerance to movement, light and sound. As relevant medical history, she had dyslipidemia and was taking anphepramona for obesity. She had suffered occasional headaches in the past, but never of that intensity. She had already used several over the counter analgesics and nonsteroidal anti-inflammatory drugs with no relief.Neurologic examination disclosed left eye ptosis, which she claimed to be preexisting (Fig A), confirmed on an old photograph. Cerebrospinal fluid analysis was normal. A magnetic resonance angiogram (MRA) of the internal carotid artery (ICA) demonstrated no signal within left ICA (Fig B) absTracT At times in clinical neurology, the identification of a subtle clinical or radiological sign can lead to prompt diagnosis of a very rare or difficult case. We report on a patient who presented with untreatable headache and unilateral ptosis. Computed tomography (CT) scan of the head did not reveal any structural cause. Magnetic resonance angiogram showed absence of left internal carotid artery, which was eventually confirmed by a catheter angiography. Reviewing the case, it emerged that a feature on the initial CT scan "bone window" would have confirmed the diagnosis, had it been searched for: the underdeveloped carotid canal, which is a consequence and a marker of internal carotid artery agenesis.Key words: carotid artery agenesis, Horner syndrome, carotid canal underdevelopment, computed tomography. resumo Em algumas circunstâncias, o reconhecimento de um sinal clínico ou radiológico sutil pode tornar simples o diagnóstico de um caso raro ou muito difícil em neurologia clínica. Relatamos o caso de uma paciente que apresentava cefaleia intratável e ptose palpebral unilateral. A tomografia computadorizada (TC) de crânio não permitiu identificar nenhuma causa estrutural. A ressonância magnética evidenciou ausência da artéria carótida interna esquerda, posteriormente confirmada por arteriografia convencional. Retrospectivamente, descobriu-se que um dado da janela óssea da primeira TC de crânio teria confirmado o diagnóstico, tivesse ele sido pesquisado: o hipodesenvolvimento do canal carotídeo, que é uma consequência e um marcador de agenesia da artéria carótida interna.Palavras-Chave: agenesia da artéria carótida, sínd...

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“…5 The ratios between prevalence rates of ICA agenesis on the right-hand side, on the left-hand side, and bilaterally are 1:3:1, respectively.…”

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confidence: 97%

Bilateral internal carotid artery agenesis: a case report

et al. 2014

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Agenesis of the internal carotid artery (ICA) is defined as a congenital absence of the carotid canal and occurs in less than 0.01% of the population. This anomaly is usually diagnosed as an incidental finding or after a cerebrovascular event. We present the case of a 36-year-old woman, with bilateral agenesis of the ICA who had suffered a subarachnoid hemorrhage due to ruptured aneurysm of the basilar artery. Therefore, agenesis of the ICA is a condition that, although rare, should be considered since there is a risk of coexistence with other life-threatening conditions such as aneurysms.Keywords: internal carotid artery; carotid artery diseases; intracranial aneurysm. ResumoAgenesia da artéria carótida interna (ACI) é definida como uma ausência congênita do canal carotídeo e ocorre em menos de 0,01% da população. O diagnóstico dessa anomalia ocorre geralmente como um achado incidental ou depois de um evento cerebrovascular. Apresentamos o caso de uma mulher de 36 anos, hipertensa e tabagista, com agenesia bilateral de ACI, que abriu quadro com hemorragia subaracnoide decorrente de rotura de aneurisma de artéria de basilar. A agenesia da ACI é, portanto, uma condição que, embora rara, deve ser lembrada por estar associada a outras más formações potencialmente fatais, como os aneurismas cerebrais.Palavras-chave: artéria carótida interna; doenças das artérias carótidas; aneurisma intracraniano.

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Agenesia da artéria carótida interna: relato de caso

Cited by 10 publications

References 6 publications

Congenital Agenesis of Right Internal Carotid Artery: A Report of Two Cases

Congenital Agenesis of Right Internal Carotid Artery: A Report of Two Cases

The missed missing hole

Bilateral internal carotid artery agenesis: a case report

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