Article Figures & Data
Figures
- Fig 1.
Coronal sonograms in a preterm neonate born at 27 + 5 gestational weeks.
A, Scan on day 1 of life shows normal cerebellar hemispheres.
B, Scan at 3 weeks shows reduced cerebellar volume.
- Fig 2.
Type 2 disrupted cerebellar development in a preterm infant born at 26 + 3 gestational weeks.
A–C, Sagittal follow-up sonograms obtained on days 57 (A), 86 (B), and 106 (C) of life show a vanishing cerebellar vermis with successive enlargement of the fourth ventricle.
D, MR image obtained at 15 weeks.
- Fig 3.
Type 1 disrupted cerebellar development in a preterm infant born at 29 gestational weeks. T1-weighted MR imaging was performed at 7 months.
A, Sagittal image shows normal configuration of the fourth ventricle, a thin corpus callosum, and an inclined tentorium. The vermis is small but normally shaped. Dimensions of the brain stem are reduced.
B and C, Parasagittal (B) and (C) frontal images demonstrate small cerebellar hemispheres immediately beneath the tentorium.
- Fig 4.
Type 2 disrupted cerebellar development.
A, Sagittal T2-weighted image shows a balloon-shaped fourth ventricle; a longitudinal, small vermis; and remarkable kinking of the brainstem.
B and C, Parasagittal T2-weighted (B) and frontal T1-weighted (C) images show small cerebellar hemispheres laterally located in the posterior fossa.
- Fig 5.
Type 3 disrupted cerebellar development in a preterm infant born at 26 + 4 gestational weeks. T2-weighted images show a skeletonized appearance of the cerebellum.
A, Sagittal image.
B, Parasagittal image.
- Fig 6.
Unclassified pattern in a preterm infant (patient 26) born at 24 + 6 gestational weeks. Images show different blood breakdown products in the posterior fossa, shrunken cerebellar hemispheres, and cystic pontine (arrow) and vermian lesions.
A, Sagittal T1-weighted image.
B, Axial T2-weighted image.
C, Axial T2*-weighted image.
D, Coronal T1-weighted image.
Tables
- TABLE 1:
Patients’ characteristics: intraventricular hemorrhage (IVH), hemosiderin infratentorial only estimated in hemosiderin-sensitive sequences
No. Type Sex Gestation Week Birth Weight (g) IVH Grade Right IVH Grade Left Posthemorrhagic Ventricular Dilatation Shunt Cerebral White Matter Loss Hemosiderin Infratentorial 1 1 M 27 1176 2 2 No No Yes 2 1 F 27 960 2 2 Yes No Yes 3 1 M 27 985 2 3 Yes Yes Yes Yes 4 1 M 25 1017 3 4 Yes Yes Yes Yes 5 1 F 26 574 0 2 No No Yes Yes 6 1 M 26 875 3 4 Yes Yes Yes No 7 1 M 25 740 2 2 No No No 8 1 M 26 640 2 2 No No No 9 1 M 29 1490 3 3 Yes Yes Yes 10 1 M 27 1130 2 2 No No Yes 11 1 M 28 800 1 1 No No Yes 12 1 F 30 1310 2 2 No No Yes 13 2 M 24 768 4 0 Yes Yes Yes Yes 14 2 F 26 822 4 3 Yes Yes Yes Yes 15 2 M 26 800 3 3 Yes Yes Yes Yes 16 2 M 24 716 2 2 Yes Yes Yes Yes 17 2 M 25 950 3 2 Yes Yes Yes 18 2 M 28 1300 4 0 Yes Yes Yes 19 2 M 27 1030 3 3 Yes Yes Yes 20 2 F 28 1330 2 2 Yes Yes Yes Yes 21 2 M 26 1080 2 2 Yes Yes No 22 3 M 26 978 2 2 Yes Yes Yes Yes 23 3 M 26 637 3 3 Yes Yes Yes Yes 24 3 M 28 1228 3 4 Yes Yes Yes No 25 3 F 27 1058 2 2 Yes No Yes No 26 M 24 866 2 2 Yes Yes No Yes 27 F 30 960 2 2 Yes Yes Yes Yes 28 M 28 1080 3 3 Yes Yes Yes Infratentorial Features Supratentorial Features Vertical cerebellar diameter reduced White matter loss Tentorium steeply inclined Thin corpus callosum Small brain stem, flattened anterior curvature of the pons Dentate nuclei not detectable Cerebellar Hemispheres Vermis Fourth Ventricle Type 1 Marked volume reduction, immediately beneath the tentorium Small, shape preserved Normal width (8) widened (4) Type 2 Volume reduction, position more lateral Very small, shape lost Balloon shaped Type 3 Marked volume reduction, “Skeletonized,” shape preserved “Skeletonized,” shape preserved Normal width
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