Assertion: artery's lumen | /r/CapableOf | become narrowed
Facets:
Source sentences:
text: If the muscular wall enlargement eventually fails to keep up with the enlargement of the atheroma volume, or a clot forms and organizes over the plaque, then the lumen of the artery becomes narrowed as a result of repeated ruptures, clots & fibrosis over the tissues separating the atheroma from the blood stream.