Pathological findings of stented segment in the superficial femoral artery (haematoxylin and eosin stain). The vessel with the stent was dehydrated and embedded in Spurr resin, sectioned every 3e4 mm, ground by the Exakt method, and stained with haematoxylin and eosin. Multiple sections were examined by light microscopy. Low power images of sequential sections (AeE) of the stent are shown in the top row, whereas the high power images are shown from A-1 e EÀ1 in the bottom row. The stent is well expanded with a round shape in all sections (AeE). Moderate luminal thrombus is observed in photomicrographs A-1 e EÀ1, whereas extraluminal thrombus is seen in photomicrographs (A-1 e D-1). Inflammation within the thrombus was present focally (as seen in EÀ1). Grey arrowheads point to the fluoropolymer mesh (A-1 e EÀ1). Focal malapposition was observed in sections A e D and shown with blue double arrows in sections A-1 e D-1. The underlying plaque showed dissection (A, B, and B-1) due to endovascular treatment with trapped blood (green arrowhead). The vessel wall showed the presence of focal areas of medial calcifications (C1). Ca ¼ calcium; Th ¼ thrombus.

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... with thrombus present luminally and extraluminally. The luminal thrombus was moderate with some struts and fluoropolymer mesh showing presence of thrombus and inflammation. The underlying plaque showed mild dissection with trapped blood. Malapposed struts were observed in the proximal portion of the vessel, with almost 50% of struts malapposed (Fig. 3). Morphometric analysis of the sections showed a median percentage (interquartiles) of malapposition of 35.7% (0e 45%). No fibrosis was noted. No evidence of such findings was found on the final ...