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Research ArticlePediatric Neuroimaging

Arterioectatic Spinal Angiopathy of Childhood: Clinical, Imaging, Laboratory, Histologic, and Genetic Description of a Novel CNS Vascular Pathology

T. Abruzzo, R. van den Berg, S. Vadivelu, S.W. Hetts, M. Dishop, P. Cornejo, V. Narayanan, K.E. Ramsey, C. Coopwood, E.G. Medici-van den Herik, S.D. Roosendaal, M. Lawton and S. Bernes
American Journal of Neuroradiology July 2022, 43 (7) 1060-1067; DOI: https://doi.org/10.3174/ajnr.A7551
T. Abruzzo
aDepartment of Radiology (T.A., P.C., S.B.)
eDepartment of Child Health (T.A., M.D., P.C., S.B.), College of Medicine, University of Arizona, Phoenix, Arizona
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  • ORCID record for T. Abruzzo
R. van den Berg
fDepartment of Radiology and Nuclear Medicine (R.v.d.B., S.D.R.), Amsterdam University Medical Centers, Amsterdam, the Netherlands
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S. Vadivelu
gDepartment of Neurosurgery (S.V.), Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio
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S.W. Hetts
hDepartment of Radiology (S.W.H.), University of California, San Francisco, San Francisco, California
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M. Dishop
bDepartment of Pathology and Laboratory Medicine (M.D.)
eDepartment of Child Health (T.A., M.D., P.C., S.B.), College of Medicine, University of Arizona, Phoenix, Arizona
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P. Cornejo
aDepartment of Radiology (T.A., P.C., S.B.)
eDepartment of Child Health (T.A., M.D., P.C., S.B.), College of Medicine, University of Arizona, Phoenix, Arizona
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V. Narayanan
iTranslational Genomics Research Institute (V.N., K.E.R.), Phoenix, Arizona
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K.E. Ramsey
iTranslational Genomics Research Institute (V.N., K.E.R.), Phoenix, Arizona
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C. Coopwood
jCollege of Medicine (C.C.), University of Arizona, Tucson, Arizona
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E.G. Medici-van den Herik
kDepartment of Neurology (E.G.M.-v.d.H.), Erasmus Medical Center, Rotterdam, the Netherlands
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S.D. Roosendaal
fDepartment of Radiology and Nuclear Medicine (R.v.d.B., S.D.R.), Amsterdam University Medical Centers, Amsterdam, the Netherlands
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M. Lawton
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S. Bernes
aDepartment of Radiology (T.A., P.C., S.B.)
cDepartment of Neurology (S.B.)
eDepartment of Child Health (T.A., M.D., P.C., S.B.), College of Medicine, University of Arizona, Phoenix, Arizona
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  • FIG 1.
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    FIG 1.

    Spine MR imaging findings. A, Midline T2-weighted sagittal MR image of the spine in patient 1 shows abnormal T2-weighted hyperintense signal in the thoracic spinal cord and conus medullaris. Spinal cord volume expansion is also present. There is conspicuous abnormal perimedullary vascular ectasia anterior to the conus medullaris and thoracic spinal cord. B, Axial T2-weighted image of the midthoracic spine shows the distribution of abnormal T2-weighted signal hyperintensity within the central and anterior spinal cord. C, Midline T2-weighted sagittal MR image of the cervical spine reveals abnormal T2-weighted hyperintense signal in the central cervical spinal cord and ventral medulla. There is diffuse spinal cord swelling affecting the region of the cervical enlargement. D, Axial T2-weighted image of the brain at the level of the medulla shows T2-signal hyperintensity in the pyramids, more conspicuous on the left. E, Midline T2-weighted sagittal MR image of the cervical and thoracic spine in patient 4 shows abnormal T2-weighted hyperintense signal in the ventral cervical and thoracic spinal cord and medulla. There is spinal cord volume expansion, prominent in the region of the cervical enlargement, and abnormal perimedullary vascular ectasia anterior to the thoracic spinal cord. F, Midline T2-weighted sagittal MR image of the lower thoracic and lumbar spine reveals abnormal T2-weighted hyperintense signal in the anterior spinal cord. There is diffuse spinal cord swelling, severely affecting the region of the lumbar enlargement. Note marked ectasia of the perimedullary vessels anterior to the spinal cord. G, Midline T2-weighted sagittal MR image of the cervical spine in patient 3 shows abnormal T2-weighted hyperintense signal in the central and anterior cervical spinal cord as well as in the ventral medulla. Mild expansion of cervical spinal cord volume is also present. Conspicuous abnormal perimedullary vascular ectasia anterior to the cervical spinal cord is demonstrated. H, Midline T2-weighted sagittal MR image of the lower thoracic spine reveals abnormal T2-weighted hyperintense signal in the central and anterior thoracic spinal cord and conus medullaris, with mild associated volume expansion. Note marked perimedullary vascular ectasia surrounding the spinal cord. I, Midline T2-weighted sagittal MR image of the cervical and thoracic spine in patient 2 shows abnormal T2-weighted hyperintense signal in the cervical and thoracic spinal cord. The region of the cervical enlargement is severely affected and shows mild volume expansion. J, Midline T2-weighted sagittal image of the lower thoracic and lumbar spine shows abnormal T2-weighted signal hyperintensity within the anterior spinal cord. There is conspicuous perimedullary vascular ectasia anterior to the conus medullaris. K, Axial T2-weighted MR image of the cervical spine reveals abnormal T2-weighted hyperintense signal in the central cervical spinal cord.

  • FIG 2.
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    FIG 2.

    Brain imaging findings. A, Reference T2-weighted sagittal, axial, and coronal MR images of the brain from patient 1 and MR spectroscopy. There is mild diffuse cerebral parenchymal volume loss with commensurate ex vacuo ventriculomegaly. Note placement of a sampling voxel for MR spectroscopy in the subcortical white matter of the mesial left parietal lobe. MR spectroscopy shows an abnormal inverted doublet peak between 1.3 and 1.4 parts per million, corresponding to lactate (red circle). B, T2-weighted axial image of the brain shows ectasia of the basilar artery and bilateral intradural internal carotid arteries. C, T2-weighted axial image of the brain shows ectasia of the MCAs and posterior cerebral arteries bilaterally. D, Symmetric T2-weighted signal hyperintensity in patient 4 is demonstrated in the anterior edge of the pons, pontine raphe, and middle cerebellar peduncles. E, Axial T2-weighted images at level of foramen of Monro in patients 1 and 4 show mild cerebral parenchymal volume loss with ex vacuo dilation of the cerebral ventricles and cortical sulci.

  • FIG 3.
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    FIG 3.

    Catheter-directed angiography findings. A, Frontal projection of a left T11 posterior intercostal artery angiogram in the early arterial phase from patient 1 shows marked ectasia of the dominant lower thoracic RMA and descending ramus of the anterior spinal artery (ASA). The ascending ramus of the ASA is mildly enlarged. The left posterolateral spinal artery is mildly enlarged. There is a uniform, unusually intense parenchymal capillary blush and early appearance of parenchymal draining veins. Note striking ectasia of the central sulcal penetrators. B, Frontal projection of a left supreme intercostal artery angiogram in the early arterial phase from patient 4 shows moderate diffuse ectasia of the ASA and central sulcal penetrators. Two RMAs are shown to be moderately ectatic. Note patchy intensification of the parenchymal capillary blush. C, Frontal projection of left posterior intercostal artery angiogram in the early arterial phase from patient 3 shows marked ectasia of the dominant lower thoracic RMA and descending ramus of the ASA. There is striking ectasia of the central sulcal penetrators. There is a uniform, unusually intense parenchymal capillary blush most prominent in the region of the conus medullaris and early appearance of parenchymal draining veins. D, Frontal projection of the right posterior intercostal artery angiogram in the early arterial phase from patient 2 shows ectasia of the dominant lower thoracic RMA and descending ramus of the ASA. Note striking ectasia of central sulcal penetrators.

  • FIG 4.
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    FIG 4.

    RMA histopathology. Patient 1. A, Hematoxylin and eosin–stained axial cross-section perpendicular to the long axis of the vessel at medium power (original magnification ×50) shows a normal trilaminar arterial wall architecture with no evidence of inflammation. B, Trichrome-stained axial cross-section perpendicular to long axis of the vessel at medium power (original magnification ×50) delineates normal elastic tissue architecture and integrity of the artery.

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American Journal of Neuroradiology: 43 (7)
American Journal of Neuroradiology
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T. Abruzzo, R. van den Berg, S. Vadivelu, S.W. Hetts, M. Dishop, P. Cornejo, V. Narayanan, K.E. Ramsey, C. Coopwood, E.G. Medici-van den Herik, S.D. Roosendaal, M. Lawton, S. Bernes
Arterioectatic Spinal Angiopathy of Childhood: Clinical, Imaging, Laboratory, Histologic, and Genetic Description of a Novel CNS Vascular Pathology
American Journal of Neuroradiology Jul 2022, 43 (7) 1060-1067; DOI: 10.3174/ajnr.A7551

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Arterioectatic Spinal Angiopathy in Childhood
T. Abruzzo, R. van den Berg, S. Vadivelu, S.W. Hetts, M. Dishop, P. Cornejo, V. Narayanan, K.E. Ramsey, C. Coopwood, E.G. Medici-van den Herik, S.D. Roosendaal, M. Lawton, S. Bernes
American Journal of Neuroradiology Jul 2022, 43 (7) 1060-1067; DOI: 10.3174/ajnr.A7551
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