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Moyamoya-like vasculopathy and Seckel syndrome: just a coincidence?
Ralph Rahme1, Louis Crevier, Josée Dubois
1Division of Neurosurgery, CHU Sainte-Justine, University of Montreal, Montreal, Quebec, Canada.
Introduction:
Seckel syndrome (SS) and other microcephalic primordial dwarfisms (MPDs) are a group of autosomal recessive disorders characterized by prenatal and postnatal growth retardation, microcephaly, and distinct facial dysmorphic features. There are an increasing number of reports in the literature linking MPDs with cerebrovascular anomalies, including intracranial aneurysms and moyamoya.
Case Report:
An 18-year-old female patient with SS and mental retardation was referred for spontaneous subarachnoid hemorrhage. At the age of 3 years, she had suffered multifocal ischemic cerebrovascular accidents following an elective urological procedure. Cardiac, hematologic, and serologic workups were negative, and cerebral angiography was recommended but declined by the parents. Brain MRA and cerebral angiography showed bilateral narrowing of extracranial and intracranial internal carotid arteries (ICAs), obliteration of the right supraclinoid ICA without moya-moya collaterals, and multiple bilateral saccular aneurysms on the hypertrophied posterior cerebral arteries. Considering the patient's previous quality of life and the high risks of either endovascular or surgical treatment, all invasive treatments were withheld at the parents' request and only palliative care was offered.
Conclusion:
It appears that patients with MPD are prone to the development of cerebrovascular anomalies. Therefore, imaging of cerebral vessels should be performed when such patients present with cerebral ischemia or stroke.
Insights
Seckel syndrome (SS) and other microcephalic primordial dwarfisms (MPDs) are linked to cerebrovascular anomalies. Patients with MPD presenting with stroke symptoms require prompt cerebral vessel imaging.
Area of Science:
- Neurology
- Genetics
- Pediatrics
Background:
- Seckel syndrome (SS) and microcephalic primordial dwarfisms (MPDs) are rare autosomal recessive disorders.
- These conditions involve severe growth retardation, microcephaly, and distinctive facial features.
- MPDs are increasingly associated with cerebrovascular abnormalities like aneurysms and moyamoya disease.
Observation:
- An 18-year-old female with SS and intellectual disability presented with subarachnoid hemorrhage.
- She had a history of multifocal ischemic strokes at age 3.
- Cerebral angiography revealed bilateral internal carotid artery narrowing, ICA obliteration, and multiple aneurysms on posterior cerebral arteries.
Findings:
- The patient's imaging demonstrated significant cerebrovascular anomalies, including stenosis and aneurysms.
- No moyamoya collaterals were observed.
- Given the high risks, invasive treatment was declined, and palliative care was provided.
Implications:
- Patients with MPDs exhibit a predisposition to developing cerebrovascular anomalies.
- Cerebral vessel imaging is crucial for MPD patients experiencing neurological events like ischemia or stroke.
- Early detection and management strategies for cerebrovascular complications in MPD are warranted.
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