Table 2.

Vascular histological features of the study population

ParameterValue
Vascular medial fibrosis, n=125
 Arterial medial fibrosis, %, mean±SD69±14
 Venous medial fibrosis, %, mean±SD63±12
Arterial medial pattern, n=107a
 Parallel to lumen16 (15.0%)
 Perpendicular to lumen25 (23.4%)
 Microperpendicular with macroparallel1 (0.9%)
 Railroad track2 (1.9%)
 Honeycomb33 (30.8%)
 Random28 (26.2%)
 Mixed2 (1.9%)
Venous medial pattern, n=112a
 Parallel to lumen30 (26.8%)
 Microperpendicular with macroparallel6 (5.4%)
 Railroad track37 (33.0%)
 Random11 (9.8%)
 Mixed28 (25.0%)
  • a The samples were too small to allow for determination of the medial pattern in 18 arteries and 13 veins.