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. Author manuscript; available in PMC: 2016 Aug 1.
Published in final edited form as: Atherosclerosis. 2015 May 19;241(2):772–782. doi: 10.1016/j.atherosclerosis.2015.05.011

Table 3. Prevalence and Extent of Microcalcification as Assessed by von Kossa Staining in 28 Non-decalcified Early Coronary Lesions.

PIT without macrophages (n=7 sections) PIT with macrophages (n=9 sections) Early fibroatheroma (n=12 sections) P value
Prevalence of Microcalcification 0.011
 None 3 (43%) 2 (22%) 0 (0%)
 Early microcalcification (≥0.5μm, <15 μm) 4 (57%) 3 (33%) 2 (17%)
 Punctate microcalcification (≥15 μm) 0 (0%) 4 (44%) 10 (83%)
Extent of microcalcification
 Circumferential extent 0.094
  None 3 (43%) 2 (22%) 0 (0%)
  1 quadrant 2 (29%) 2 (22%) 3 (25%)
  2 quadrants 2 (29%) 4 (44%) 3 (25%)
  3 quadrants 0 (0%) 1 (11%) 6 (50%)
 Location (depth) within the intima 0.11
  None 3 (43%) 2 (22%) 0 (0%)
  Outer 1/3 (deeper intima) 3 (43%) 4 (44%) 3 (25%)
  Outer 2/3 (deeper and mid intima) 1 (14%) 3 (33%) 7 (58%)
  Diffuse 0 (0%) 0 (0%) 2 (17%)