| Summary: | Acute ischemic stroke (AIS) in childhood is defined by a stroke occurring after 28 days of life to 18 years of age. This presents a distinct clinical challenge in terms of both diagnosis and treatment. The overlapping clinical presentations of acute ischemic stroke and its mimics such as migraine with aura, seizure with Todd paresis and encephalitis renders early accurate diagnosis of this time-sensitive condition difficult, with a change in the final diagnosis in up to 40% of patients. Identification of the etiology after establishing the diagnosis of ischemic stroke is paramount for prognostication and treatment decisions. These include cardioembolic, arteriopathy, thrombophilia and inflammatory causes.Magnetic resonance imaging (MRI) plays an indispensable role towards tackling the initial diagnostic dilemma and subsequent evaluation of the underlying etiology, particularly in patients with arteriopathy.Here we present the MRI findings including vessel wall imaging with longitudinal follow-up, which support the diagnosis of focal cerebral arteriopathy-inflammatory type (FCAi) in a pediatric patient.
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