Neuroblastoma is the most common neoplasm associated with pediatric Horner syndrome. The laboratory and imaging evaluation of isolated pediatric Horner syndrome is controversial. We review the literature published in the last several decades and present the rationale for the imaging work-up in this patient cohort.
Keywords: Anisocoria; Children; Horner syndrome; Magnetic resonance imaging; Neuroblastoma; Oculosympathetic pathway; Ptosis.