Cross-section of a small pulmonary vein

Showing complete luminal obliteration by pink collagen (between arrows). Hematoxylin-eosin; original magnification: x20.

Reproduced with permission from: Mandel, J, Mark, E, Hales, C. Pulmonary veno-occlusive disease. Am J Respir Crit Care Med 2000; 162:1964. Official Journal of the American Thoracic Society © American Lung Association.

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