How Far Can we Go? Managing Moyamoya Syndrome in a 3-Year-Old With Thalassemia Major: A Rare Pediatric Case From

Kshitiz Parajuli1, Abhisek Jha1, Aron Neupane1

  • 1Department of Pediatrics Birat Medical College and Teaching Hospital Morang Nepal.

Clinical Case Reports
|February 26, 2026
PubMed

Insights

This case study details a pediatric Moyamoya syndrome (MMS) patient with Thalassemia Major presenting with alternating hemiparesis. Early diagnosis via MRI/MRA and supportive care showed improvement, though financial barriers impacted definitive treatment.

Area of Science:

  • Neurology
  • Pediatrics
  • Vascular Medicine

Background:

  • Moyamoya syndrome (MMS) is a rare cerebrovascular disorder characterized by intracranial artery stenosis and collateral formation.
  • Pediatric MMS often presents with ischemic strokes, potentially exacerbated by coexisting conditions like Thalassemia Major.
  • Thalassemia Major can negatively impact vascular health, increasing risks in pediatric patients with cerebrovascular conditions.

Purpose of the Study:

  • To report a rare pediatric case of Moyamoya syndrome presenting with alternating hemiparesis.
  • To emphasize the diagnostic role of advanced neuroimaging in pediatric Moyamoya syndrome.
  • To highlight the challenges in accessing definitive surgical care due to socio-economic factors.

Main Methods:

  • A case report of a 3-year-old male with Thalassemia Major presenting with stroke-like symptoms.
  • Diagnostic workup included neurological examination, laboratory tests, MRI Brain with contrast, and TOF-MRA.
  • Treatment involved aspirin and supportive care, with surgical revascularization (EDAS) recommended but deferred.

Main Results:

  • The patient exhibited acute neurological deficits, including hemiparesis and altered consciousness, consistent with ischemic stroke.
  • Neuroimaging confirmed Moyamoya disease (Suzuki stage 3) with significant internal carotid artery stenosis.
  • Initial treatment with aspirin led to partial neurological improvement within 5 days.

Conclusions:

  • Alternating hemiparesis can be a rare presenting symptom of pediatric Moyamoya syndrome.
  • MRI/MRA are crucial for diagnosing Moyamoya disease in children.
  • Socio-economic factors significantly influence the accessibility of timely and definitive surgical interventions for Moyamoya syndrome.

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