Journal
NEUROPEDIATRICS
Volume 42, Issue 6, Pages 227-233Publisher
GEORG THIEME VERLAG KG
DOI: 10.1055/s-0031-1295493
Keywords
intracranial calcification; COL4A1; periventricular leukomalacia
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Funding
- NIH [KL2-RR025015]
- Great Ormond Street Hospital
- NHLBI GO Exome Sequencing Project [HL-102923, HL-102924, HL-102925, HL-102926, HL-103010]
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Introduction: Intracranial calcification (ICC) is a relatively common radiological finding in children undergoing investigation for neurological disorders. Many causes are recognised, and ICC is often regarded as a non-specific sign. Methods: From an ongoing study of ICC, we identified 5 patients with characteristic radiological features, in whom a mutation in the COL4A1 gene was found. Results: All patients had CT and MR imaging. MR images demonstrated features of periventricular leukomalacia with irregular dilatation of the lateral ventricles with or without porencephaly, loss of hemispheric white matter volume, and high signal on T(2) and FLAIR sequences within periventricular and deep white matter. Calcification was apparent on MR in 4 patients. CT scans demonstrated spot and linear calcification in the subependymal region and around areas of porencephaly. Calcification was also visible in the deep cerebral white matter and basal ganglia. 1 patient showed calcification in the central pons. Conclusion: ICC occurs in COL4A1-related disease. The radiological features are distinct from other conditions demonstrating recognisable patterns of ICC, such as congenital cytomegalovirus infection and Aicardi-Goutieres syndrome. In the absence of a known risk factor for periventricular leukomalacia, the presence of these radio logical findings should suggest the possibility of COL4A1-related disease.
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