AVs with HO (n=21) AVs without HO (n=54) P-value
Age (y), range (mean) 52-84 (70.8) 50-88 (71.5) 0.845*
Gender (male/female) 15/6 31/23 0.392†
Moderate to severe calcification 21 27 <0.001‡
Moderate to severe fibrous thickening 18 17 <0.001‡
Neovessels (ThKA-Vs and/or ThNC-Vs) 21 33 <0.001‡
ThKA-Vs 13 18 0.046†
ThNC-Vs only 8 15 0.554‡
Foamy cell aggregation 10 17 0.299†
Lymphoplasmacytic infiltration 19 18 <0.001‡
Metaplastic cartilage (hyaline and/or fibrous cartilage) 10 3 <0.001‡
AVs: aortic valves; HO: heterotopic ossification; ThNC-Vs: thin capillary vessel-like neovessels; ThKA-Vs: thick arteriole-like neovessels.
*Mann-Whitney U test.
†Chi-square test.
‡Fisher’s exact test.
Table 1: Clinicopathological comparison of 75 dysfunctional aortic valves with and
without heterotopic ossification.