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Bone formation in cardiac valves: a histopathological study of 128 cases

Publication at Faculty of Medicine in Hradec Králové |
2007

Abstract

In a series of 1,177 patients with surgical valve resection, there were 128 (10.9 %) patients with the histological finding of bone and/or cartilage formation (bony metaplasia; heterotopic ossification) in the excised valve (119 aortic, 9 mitral). The incidence was higher in men (12.8%) than in women (8.5%).

The bony metaplasia was always associated with valvular calcification. The metaplastic changes were encountered in all types of calcific aortic valve disease (senile, bicuspid valve, post-rheumatic).

The marrow of the heterotopic lamellar bone was mostly composed of adipose tissue. Frequently, it showed chronic inflammation with polyclonal plasmocytic infiltration.

Complete haematopoiesis was present only rarely.