FIG 4. Preterm infant of 23 weeks' (+6 days) gestation (case 3) at age 3 weeks.

A, T2-weighted (3500/208) FSE sequence shows a large intraventricular hemorrhage with fan-shaped parenchymal involvement. The perihemorrhagic white matter is of very high signal intensity (arrow).

B, Histologic section shows intraventricular hemorrhage. A zone of venous infarction radiates out into the white matter from the site of bleeding (arrow in center of infarct). Relatively normal white matter is seen to the left of the picture (arrowhead). The infarcted area is very pale owing to tissue loss (hematoxylin-eosin, original magnification x22.5).

C, Higher-magnification histologic section of the venous infarction shows very congested capillaries. The adjacent tissue contains many large macrophages with ingested red cells (arrows). There are few free red cells. The tissue shows early cystic breakdown (hematoxylin-eosin, original magnification x360).