Faciobrachial Stroke as the Initial Presentation of Moyamoya in a Pediatric Patient Precipitated by Mycoplasma pneumoniae Pneumonia: A Case Report and Comprehensive Review of the Literature.

Moyamoya disease is characterized by progressive stenosis of the distal end of the internal carotid arteries with the formation of extensive collaterals. Moyamoya is a common cause of pediatric stroke, but data regarding pediatric-specific etio-clinical profiles and topological co-relation are sparse. We present a rare case of a 10-year-old girl with left faciobrachial monoparesis due to an acute ischemic stroke in the right subcortical frontoparietal region, with angiography revealing bilateral moyamoya disease. This unique hemodynamic stroke of moyamoya was precipitated by pneumonia.