Abstract
Objective: To quantify the incidence and extent of structural changes present in the long saphenous vein of patients with arterial disease. Design: Observational study of saphenous vein morphology. Setting: Departments of Surgery and Pathology, Leicester Royal Infirmary. Patients: Sixty vein biopsies from patients undergoing arterial surgery. Main outcome measures: Intimal and medial thickness and morphology. Results: Smooth muscle cell hyperplasia, elastosis and fibrosis contributed to intimal thickening (> 10 μm) in 87% of veins. This was frequently associated with medial longitudinal muscle hypertrophy. Intimal thickness had a skewed distribution with a median (range) of 33 (8–381) μm, The upper limit of the normal range was 200 μm. The median (range) medial thickness was 293 (131–468) μm. Conclusions: Intimal thickening is common in the long saphenous vein of patients undergoing arterial surgery but is extensive in only a small proportion. The upper limit of the normal range was 200 μm.
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