A child with Myhre syndrome presenting with moyamoya disease: a case report and literature review
Abstract Background: Myhre syndrome (MS) is a very rare connective tissue disorder characterized by facial dysmorphism, thickened skin, muscular pseudohypertrophy and joint limitation. Developmental delay is common. But there are no reports of MS combined with moyamoya disease (MMD). Here, we present the first Chinese case of MS complicated with MMD. Case presentation: A 7-old-year girl presented with developmental disorder, short stature, brachydactyly, short stature, and intellectual deficiency with behavioral problems. We sequenced SMAD4 using exome sequencing and identified a denovo mutation (p.Ile500Thr) in the patient. In addition, The patient also had recurrent hemiplegia and seizures was diagnosed with definitive MMD by digital subtraction angiography (DSA) according to the diagnostic criteria. Conclusions: MMD has never been described in the individual with the clinical presentation of MS. we present an unusual association of MS with a typical moyamoya syndrome in a young girl who developed recurrent hemiplegia and seizure in an effort to explore whether MS may contribute to the MMD.