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Clinically successful late recanalization of basilar artery occlusion in childhood: What are the odds?: Case report and review of the literature

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Abstract

Background and purpose

Acute basilar artery occlusion is an infrequent but potentially fatal cause of stroke, both in adults and children. We present our experience with a 6-year-old child and we investigate the rationality for late treatment of acute basilar occlusion in children.

Methods

We report the case of a 6-year-old boy with acute basilar artery occlusion presented with a full blown locked-in syndrome, admitted to the endovascular suite 44 h after the stroke onset, and we review all the reported cases of basilar artery occlusions presented with locked-in syndrome in children.

Results

Six hours following admission the basilar artery was partially recanalized by intra-arterial thrombolysis combined with mechanical clot angioplasty. After 12 h, the patient was awake, oriented, his speech function was fully restored and he had only a mild right hemiparesis that recovered completely after a month.

Conclusions

To our knowledge, this is the first report of complete clinical recovery after delayed (50 h) endovascular recanalization of basilar artery in a child. Intra-arterial thrombolysis combined with cerebral angioplasty, can successfully restore the patency of the basilar artery and the neurologic deficit of children with acute basilar artery occlusion, even after a considerable delay.

Introduction

Acute basilar artery occlusion (ABAO) is an infrequent but potentially fatal cause of stroke, both in adults and children [1]. Locked-in syndrome is a common clinical pattern of this condition and is attributed to the occlusion of the midportion of the basilar artery (BA) causing ischemic damage to the pontine pyramidal tracts [2]. It is characterized by upper motor neuron quadriplegia, paralysis of lower cranial nerves, bilateral paresis of horizontal gaze and anarthria, with preserved consciousness.

Traumatic vertebral artery dissection is one of the most common causes of ABAO in young patients and must be especially suspected in patients presenting with cervical pain preceding the dramatic neurological deterioration [3]. Delay in the diagnosis of ABAO is frequent due mainly to the misleading symptoms and signs and the rarity of this condition [4], [5]. In adults, intra-arterial fibrinolysis is considered as the most effective available treatment to achieve BA recanalization and clinical improvement. In children, this technique has been rarely reported. The aim of this paper it to report the first case of complete clinical recovery after delayed (50 h) endovascular recanalization of the BA in a child and to review the pediatric literature.

Section snippets

Case report

A 6-year-old child presented an episode of sudden loss of consciousness a few minutes after the arrival in his classroom. This initial attack was characterized by an unprovoked shout followed by prolonged “pathological cry,” fall to the ground and “spasms”. The first assessment took place at the regional hospital and involved a neurological examination from a pediatric neurologist. On examination, the patient's eyes were open but there wasn't any reaction to the environmental stimuli, he was

Discussion

In general, the annual incidence of pediatric stroke is estimated at 2.5 cases per 100,000 children [6]. Furthermore, the occlusion of BA in childhood is even rarer [7]. Our review of the literature yielded 14 cases of ABAO presented with locked-in syndrome in children between 4–18 years of age (Table 1).

One of the leading causes of BA occlusion in children is the vertebral artery (VA) dissection [3]. Very often a history of trivial neck or head trauma is identified and this was the case in our

Conclusions

The clinical diagnosis of ABAO in children is often delayed. The reasons for this are the rarity of this condition and the vague, non-specific presenting symptoms. Intra-arterial thrombolysis combined with cerebral angioplasty, can successfully restore the patency of the basilar artery and the neurologic deficit of children with ABAO, even after a considerable delay. To our knowledge, this is the first pediatric report of complete clinical recovery after delayed endovascular recanalization of

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